Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
321
FNUS55 KRIW 041929
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
129 PM MDT Fri Sep 4 2026
.DISCUSSION...
...Yellowstone NP and Teton dispatch areas (includes fire weather
zones 140...414...415...and 416)...
Gusty 20 to 35 mph southwest winds will be widespread across the
Dispatch Area through sunset. Expect relatively light and diurnally
driven winds overnight before increasing after 1100L Saturday.
Relative humidity values of 20 percent or greater continue through
the afternoon before improving after 1900L. Fair overnight humidity
recovery across higher elevations and good humidity recovery in
lower elevations. Elevated fire weather conditions are expected on
Saturday afternoon with similar relative humidity and lower wind
gusts compared to today.
...Cody dispatch area (includes fire weather zones 275...276...
282...283...285...286...287...288...and 289)...
***RED FLAG WARNING IN EFFECT UNTIL 9 PM TONIGHT FOR ALL ZONES
EXCEPT 288***
Gusty 20 to 35 mph southwest winds will be widespread across the
Dispatch Area through sunset. Expect relatively light and diurnally
driven winds overnight before increasing after 1100L Saturday.
Relative humidity values of 15 percent or lower will begin to
improve after 2000L, with critical values across all zones except
288. Anticipate fair overnight humidity recovery. Excellent mixing
and smoke dispersal through 1800L before quickly becoming poor.
Elevated to near critical fire weather conditions are expected on
Saturday afternoon with 1 to 5 percent higher relative humidity and
lower wind gusts compared to today.
...Casper dispatch area (includes fire weather zones 277...278...
279...280...281...285...289...and 300)...
***RED FLAG WARNING IN EFFECT UNTIL 9 PM TONIGHT FOR ZONES 281...
280...285 AND 289***
Gusty 25 to 35 mph southwest winds will be widespread across the
Dispatch Area through sunset. Expect relatively light, southerly
winds through the overnight hours before increasing after 1100L
Saturday. Relative humidity values across the Dispatch Area range
from 10 to 20 percent, with the lowest, widespread critical values
across Zones 280, 281, 285, and 289. Relative humidity begins to
improve after 2000L today with fair humidity recovery overnight.
Anticipate excellent mixing and smoke dispersal through 1800L.
Elevated to near critical fire weather conditions are expected on
Saturday afternoon with 1 to 5 percent higher relative humidity and
lower wind gusts compared to today.
...Thunderstorms imply strong gusty and erratic winds...
WYZ280-052130-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
129 PM MDT Fri Sep 4 2026
...RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING...
.THIS AFTERNOON...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....85-90.
24 hr trend......6 degrees warmer.
Min humidity........11-17 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Southwest winds around 20 mph with gusts to
around 35 mph.
Ridge top winds.....Southwest around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 25 mph.
Mixing Height.......10000-10800 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....58-63.
24 hr trend......2 degrees warmer.
Max humidity........36-42 percent.
24 hr trend......8 percent wetter.
Humidity recovery...Poor.
20-foot winds.......Southwest winds 10 to 15 mph. Gusts up to 35
mph until 2400, then 20 mph.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......4600-6600 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Very good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....84-89.
24 hr trend......Unchanged.
Min humidity........15-21 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 20 to 25 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 8600-10600 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.SATURDAY NIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....58-63.
24 hr trend......1 degree cooler.
Max humidity........42-48 percent.
24 hr trend......6 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds around 10 mph with gusts to
around 25 mph until 2100, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Southwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......4400-6400 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....83-88.
24 hr trend......1 degree cooler.
Min humidity........15-21 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest 10 to 15 mph with gusts to around 30
mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then around
20 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 8600-10600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then chance of showers
after midnight. Lows around 60. Southwest winds around 15 mph.
.LABOR DAY THROUGH TUESDAY...Mostly clear. Lows 48 to 53. Highs
76 to 81. West winds 15 to 20 mph.
.WEDNESDAY...Partly cloudy. Slight chance of showers. Lows in the
mid 50s. Highs around 80. Winds generally less than 10 mph.
.THURSDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the lower 80s.
.FRIDAY...Mostly sunny. Slight chance of showers in the morning,
then slight chance of showers and thunderstorms in the afternoon.
Highs around 80.
$$
WYZ283-052130-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
129 PM MDT Fri Sep 4 2026
...RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING...
.THIS AFTERNOON...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....80-85.
24 hr trend......5 degrees warmer.
Min humidity........10-16 percent.
24 hr trend......Unchanged.
20-foot winds.......Southwest winds around 20 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 25 mph.
Mixing Height.......9800-10800 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....51-56.
24 hr trend......1 degree warmer.
Max humidity........43-49 percent.
24 hr trend......8 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds 10 to 15 mph. Gusts up to 30
mph until 2400, then 20 mph.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......4800-6800 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....80-85.
24 hr trend......Unchanged.
Min humidity........18-24 percent.
24 hr trend......6 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 8400-10400 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.SATURDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....51-56.
24 hr trend......1 degree cooler.
Max humidity........42-48 percent.
24 hr trend......Unchanged.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds around 10 mph. Gusts up to 25
mph until 2400, then 15 mph.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......4400-6400 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....78-83.
24 hr trend......2 degrees cooler.
Min humidity........18-24 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
10 to 15 mph with gusts to around 30 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then south
around 20 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then chance of showers
after midnight. Lows in the upper 50s. Southwest winds around
15 mph.
.LABOR DAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the mid 70s. West
winds around 20 mph.
.TUESDAY...Mostly clear. Lows around 50. Highs in the mid 70s.
West winds around 10 mph.
.WEDNESDAY...Partly cloudy. Lows in the mid 50s. Highs in the
upper 70s. Winds generally less than 10 mph.
.THURSDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs around 80.
.FRIDAY...Mostly sunny. Slight chance of showers in the morning,
then slight chance of showers and thunderstorms in the afternoon.
Highs in the upper 70s.
$$
WYZ285-052130-
South Bighorn Mountains-
129 PM MDT Fri Sep 4 2026
...RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING...
.THIS AFTERNOON...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....78-83.
24 hr trend......6 degrees warmer.
Min humidity........11-17 percent.
24 hr trend......Unchanged.
20-foot winds.......Southwest winds around 20 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 25 mph.
Mixing Height.......8400-10000 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....57-62.
24 hr trend......Unchanged.
Max humidity........32-38 percent.
24 hr trend......8 percent wetter.
Humidity recovery...Poor.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph.
Mixing Height.......4200-6200 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....77-82.
24 hr trend......1 degree cooler.
Min humidity........17-23 percent.
24 hr trend......6 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 25 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 7400-9400 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.SATURDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....55-60.
24 hr trend......2 degrees cooler.
Max humidity........37-43 percent.
24 hr trend......4 percent wetter.
Humidity recovery...Poor.
20-foot winds.......South winds around 10 mph with gusts to around
25 mph until 0300, then downslope/downvalley
4-7 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......3800-5800 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....76-81.
24 hr trend......1 degree cooler.
Min humidity........17-23 percent.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....Southwest around 10 mph until 1200, then south
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then around
20 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 7400-9400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then chance of showers
after midnight. Lows in the upper 50s. Southwest winds around
20 mph.
.LABOR DAY THROUGH TUESDAY...Breezy. Mostly clear. Lows in the
upper 40s. Highs 68 to 73. West winds 10 to 25 mph.
.WEDNESDAY...Partly cloudy. Lows in the mid 50s. Highs in the
lower 70s. Southwest winds around 10 mph.
.THURSDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the mid 70s.
.FRIDAY...Mostly sunny. Slight chance of showers in the morning,
then slight chance of showers and thunderstorms in the afternoon.
Highs in the lower 70s.
$$
WYZ281-052130-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
129 PM MDT Fri Sep 4 2026
...RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING...
.THIS AFTERNOON...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....86-91.
24 hr trend......6 degrees warmer.
Min humidity........9-15 percent.
24 hr trend......Unchanged.
20-foot winds.......Southwest winds around 20 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 25 mph.
Mixing Height.......10000-10800 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....58-63.
24 hr trend......1 degree warmer.
Max humidity........36-42 percent.
24 hr trend......9 percent wetter.
Humidity recovery...Poor.
20-foot winds.......Southwest winds 10 to 15 mph. Gusts up to 30
mph until 2400, then 20 mph.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......4600-6600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....83-88.
24 hr trend......2 degrees cooler.
Min humidity........17-23 percent.
24 hr trend......6 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph. Gusts up to 25 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 8400-10400 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.SATURDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....58-63.
24 hr trend......Unchanged.
Max humidity........47-53 percent.
24 hr trend......11 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......West winds around 10 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......4400-6400 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....81-86.
24 hr trend......2 degrees cooler.
Min humidity........20-26 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then slight chance of
showers after midnight. Lows in the lower 60s. Southwest winds
around 15 mph.
.LABOR DAY THROUGH TUESDAY...Mostly clear. Lows 48 to 53. Highs
78 to 83. Northwest winds 10 to 20 mph.
.WEDNESDAY...Partly cloudy. Lows in the mid 50s. Highs in the
upper 70s. Winds generally less than 10 mph.
.THURSDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the lower 80s.
.FRIDAY...Mostly sunny. Slight chance of showers in the morning,
then slight chance of showers and thunderstorms in the afternoon.
Highs in the lower 80s.
$$
WYZ282-052130-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
129 PM MDT Fri Sep 4 2026
...RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING...
.THIS AFTERNOON...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....81-86.
24 hr trend......6 degrees warmer.
Min humidity........8-14 percent.
24 hr trend......2 percent drier.
20-foot winds.......Southwest winds around 20 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 25 mph.
Mixing Height.......10200-11400 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....56-61.
24 hr trend......2 degrees cooler.
Max humidity........36-42 percent.
24 hr trend......12 percent wetter.
Humidity recovery...Poor.
20-foot winds.......South winds 10 to 15 mph with gusts to around
25 mph.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph.
Mixing Height.......4800-6800 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Very good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....80-85.
24 hr trend......1 degree cooler.
Min humidity........15-21 percent.
24 hr trend......5 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
around 10 mph with gusts to around 25 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then around 20
mph.
Mixing Height.......1800-3800 ft agl until 1200, then 7800-9800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.SATURDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....55-60.
24 hr trend......1 degree cooler.
Max humidity........47-53 percent.
24 hr trend......10 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......South winds around 10 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......4600-6600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....79-84.
24 hr trend......2 degrees cooler.
Min humidity........15-21 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then south
around 10 mph with higher gusts.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then chance of showers
after midnight. Lows around 60. South winds around 15 mph.
.LABOR DAY THROUGH TUESDAY...Mostly clear. Lows in the lower 50s.
Highs 76 to 81. Northwest winds 10 to 15 mph.
.WEDNESDAY...Partly cloudy. Lows in the mid 50s. Highs in the
upper 70s. Winds generally less than 10 mph.
.THURSDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the lower 80s.
.FRIDAY...Mostly sunny. Slight chance of showers in the morning,
then slight chance of showers and thunderstorms in the afternoon.
Highs in the lower 80s.
$$
WYZ275-052130-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
129 PM MDT Fri Sep 4 2026
...RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING...
.THIS AFTERNOON...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....79-84.
24 hr trend......7 degrees warmer.
Min humidity........10-16 percent.
24 hr trend......1 percent drier.
20-foot winds.......South winds around 20 mph with gusts to around
35 mph.
Ridge top winds.....South around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 25 mph.
Mixing Height.......10600-12600 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....55-60.
24 hr trend......3 degrees warmer.
Max humidity........39-45 percent.
24 hr trend......5 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......South winds 10 to 15 mph with gusts to around
30 mph until 2400, then west and gusty.
Ridge top winds.....South around 15 mph until 2400, then west.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph until 2400, then northwest.
Mixing Height.......5200-7200 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Very good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....78-83.
24 hr trend......3 degrees cooler.
Min humidity........15-21 percent.
24 hr trend......5 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then south
around 10 mph with gusts to around 25 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.SATURDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....54-59.
24 hr trend......Unchanged.
Max humidity........51-57 percent.
24 hr trend......14 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......Southeast winds around 10 mph until 2100, then
north until 0300, then northwest. Gusts up to
25 mph.
Ridge top winds.....Southeast around 15 mph until 2400, then
northwest.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph until 2400, then northwest.
Mixing Height.......4400-6400 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....77-82.
24 hr trend......2 degrees cooler.
Min humidity........18-24 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
southeast around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then
southeast.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then south.
Mixing Height.......600-2600 ft agl until 1200, then 4400-6400 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then chance of showers
after midnight. Lows in the upper 50s. South winds around 15 mph.
.LABOR DAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows around 50. Highs in the upper 70s. Southwest
winds around 15 mph.
.TUESDAY...Mostly clear. Lows around 50. Highs in the mid 70s.
Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Lows in the mid 50s. Highs in the
upper 70s. Winds generally less than 10 mph.
.THURSDAY...Partly cloudy with slight chance of showers. Lows in
the mid 50s. Highs in the lower 80s.
.FRIDAY...Partly cloudy. Slight chance of showers in the morning,
then slight chance of showers and thunderstorms in the afternoon.
Highs around 80.
$$
WYZ276-052130-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
129 PM MDT Fri Sep 4 2026
...RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING...
.THIS AFTERNOON...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....82-87.
24 hr trend......7 degrees warmer.
Min humidity........11-17 percent.
24 hr trend......2 percent drier.
20-foot winds.......Southwest winds around 15 mph with gusts to
around 25 mph.
Ridge top winds.....Southwest around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 25 mph.
Mixing Height.......10800-12000 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....55-60.
24 hr trend......2 degrees warmer.
Max humidity........36-42 percent.
24 hr trend......1 percent wetter.
Humidity recovery...Poor.
20-foot winds.......Southwest winds around 10 mph with gusts to
around 25 mph until 0300, then
downslope/downvalley 4-7 mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......4600-6600 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....78-83.
24 hr trend......4 degrees cooler.
Min humidity........22-28 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then south
around 20 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 7600-9600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.SATURDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....55-60.
24 hr trend......1 degree cooler.
Max humidity........44-50 percent.
24 hr trend......6 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......West winds around 10 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......3800-5800 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....76-81.
24 hr trend......1 degree cooler.
Min humidity........27-33 percent.
24 hr trend......5 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southeast 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....Southwest around 10 mph until 1200, then
southeast.
Chc of wetting rain.Zero percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 6400-8400 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then chance of showers
after midnight. Lows in the upper 50s. Southwest winds around
10 mph.
.LABOR DAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
Southwest winds around 15 mph.
.TUESDAY...Mostly clear. Lows in the upper 40s. Highs in the
lower 70s. West winds around 10 mph.
.WEDNESDAY...Partly cloudy. Lows in the mid 50s. Highs in the mid
70s. Winds generally less than 10 mph.
.THURSDAY THROUGH FRIDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the mid 50s. Highs 74 to 79.
$$
WYZ287-052130-
Owl Creek Mountains-
129 PM MDT Fri Sep 4 2026
...RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING...
.THIS AFTERNOON...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....76-81.
24 hr trend......5 degrees warmer.
Min humidity........11-17 percent.
24 hr trend......2 percent drier.
20-foot winds.......Southwest winds around 20 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 25 mph.
Mixing Height.......9400-10600 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....53-58.
24 hr trend......Unchanged.
Max humidity........32-38 percent.
24 hr trend......5 percent wetter.
Humidity recovery...Poor.
20-foot winds.......Southwest winds 10 to 15 mph. Gusts up to 30
mph until 2400, then 15 mph.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......4600-6600 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Very good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....76-81.
24 hr trend......Unchanged.
Min humidity........15-21 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
10 to 15 mph with gusts to around 25 mph.
Ridge top winds.....South around 10 mph until 1200, then around 20
mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then around
20 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 7600-9600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.SATURDAY NIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....52-57.
24 hr trend......1 degree cooler.
Max humidity........37-43 percent.
24 hr trend......6 percent wetter.
Humidity recovery...Poor.
20-foot winds.......Southwest winds around 10 mph with gusts to
around 25 mph until 0300, then
downslope/downvalley 4-7 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......4400-6400 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....74-79.
24 hr trend......2 degrees cooler.
Min humidity........17-23 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
10 to 15 mph with gusts to around 25 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then south
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then south
around 20 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then chance of showers
after midnight. Lows in the upper 50s. Southwest winds around
15 mph.
.LABOR DAY THROUGH TUESDAY...Mostly clear. Lows around 50. Highs
69 to 74. West winds 10 to 20 mph.
.WEDNESDAY...Partly cloudy. Lows in the mid 50s. Highs in the
lower 70s. Winds generally less than 10 mph.
.THURSDAY...Partly cloudy. Lows in the mid 50s. Highs in the mid
70s.
.FRIDAY...Mostly sunny. Slight chance of showers in the morning,
then slight chance of showers and thunderstorms in the afternoon.
Highs in the lower 70s.
$$
WYZ286-052130-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
129 PM MDT Fri Sep 4 2026
...RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING...
.THIS AFTERNOON...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....73-78.
24 hr trend......8 degrees warmer.
Min humidity........18-24 percent.
24 hr trend......4 percent drier.
20-foot winds.......Southwest winds around 15 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 25 mph.
Mixing Height.......8400-9400 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....48-53.
24 hr trend......4 degrees warmer.
Max humidity........44-50 percent.
24 hr trend......7 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds around 10 mph with gusts to
around 30 mph until 0300, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......3600-5600 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....69-74.
24 hr trend......2 degrees cooler.
Min humidity........23-29 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest 10 to 15 mph. Gusts up to 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then around
25 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.SATURDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....47-52.
24 hr trend......1 degree cooler.
Max humidity........49-55 percent.
24 hr trend......2 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds around 10 mph with gusts to
around 25 mph until 0300, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......3400-5400 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms late
in the afternoon. Chance of precipitation 20
percent.
Chance of thunder...10 percent.
Max temperature.....68-73.
24 hr trend......1 degree cooler.
Min humidity........28-34 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
10 to 15 mph. Gusts up to 25 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then south
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then showers likely after
midnight. Lows in the upper 40s. Southwest winds around 10 mph.
.LABOR DAY...Cooler. Mostly clear with showers likely and chance
of thunderstorms. Lows in the upper 30s. Highs in the upper 50s.
West winds around 20 mph.
.TUESDAY...Mostly clear. Lows in the lower 40s. Highs in the
upper 50s. West winds around 15 mph.
.WEDNESDAY...Partly cloudy. Slight chance of showers. Lows in the
mid 40s. Highs in the mid 60s. West winds around 10 mph.
.THURSDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the mid 60s.
.FRIDAY...Partly cloudy. Slight chance of showers in the morning,
then chance of showers and slight chance of thunderstorms in the
afternoon. Highs in the lower 60s.
$$
WYZ140-052130-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
129 PM MDT Fri Sep 4 2026
.THIS AFTERNOON...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....66-71.
24 hr trend......7 degrees warmer.
Min humidity........25-31 percent.
24 hr trend......4 percent drier.
20-foot winds.......Southwest winds around 15 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 30 mph.
Mixing Height.......7200-8200 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....41-46.
24 hr trend......3 degrees warmer.
Max humidity........56-62 percent.
24 hr trend......10 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Downslope/downvalley 4-7 mph until 2400, then
southeast around 10 mph. Gusts up to 25 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......2800-4800 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....68-73.
24 hr trend......Unchanged.
Min humidity........27-33 percent.
24 hr trend......1 percent drier.
20-foot winds.......South winds around 10 mph with gusts to around
30 mph.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph until 1200, then southwest
around 25 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.SATURDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....41-46.
24 hr trend......1 degree cooler.
Max humidity........64-70 percent.
24 hr trend......4 percent wetter.
Humidity recovery...Good.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....South around 10 mph until 2400, then southeast.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph.
Mixing Height.......3200-5200 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....69-74.
24 hr trend......2 degrees warmer.
Min humidity........26-32 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph with gusts to around 30
mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 15 to 20 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 7600-9600 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then showers likely and
slight chance of thunderstorms after midnight. Lows in the lower
40s. Winds generally less than 10 mph.
.LABOR DAY...Cooler. Partly cloudy with showers and chance of
thunderstorms. Lows in the mid 30s. Highs in the mid 50s.
Southwest winds around 15 mph.
.TUESDAY...Mostly clear. Lows in the mid 30s. Highs in the mid
50s. Southwest winds around 10 mph.
.WEDNESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the lower 60s.
Winds generally less than 10 mph.
.THURSDAY...Partly cloudy with chance of showers and slight
chance of thunderstorms. Lows in the lower 40s. Highs in the
lower 60s.
.FRIDAY...Partly cloudy. Chance of showers in the morning, then
chance of showers and slight chance of thunderstorms in the
afternoon. Highs around 60.
$$
WYZ415-052130-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
129 PM MDT Fri Sep 4 2026
.THIS AFTERNOON...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....69-74.
24 hr trend......7 degrees warmer.
Min humidity........21-27 percent.
24 hr trend......5 percent drier.
20-foot winds.......Southwest winds around 15 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 25 mph.
Mixing Height.......8400-9200 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....43-48.
24 hr trend......4 degrees warmer.
Max humidity........60-66 percent.
24 hr trend......5 percent drier.
Humidity recovery...Good.
20-foot winds.......Southwest winds around 10 mph with gusts to
around 30 mph until 2100, then
downslope/downvalley 4-7 mph until 2400, then
southeast around 10 mph and gusty.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph.
Mixing Height.......3400-5400 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....68-73.
24 hr trend......2 degrees cooler.
Min humidity........28-34 percent.
24 hr trend......2 percent wetter.
20-foot winds.......South winds around 10 mph with gusts to around
30 mph.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph until 1200, then southwest
around 25 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.SATURDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....42-47.
24 hr trend......1 degree cooler.
Max humidity........56-62 percent.
24 hr trend......1 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds around 10 mph with gusts to
around 25 mph until 2100, then
downslope/downvalley 4-7 mph.
Ridge top winds.....South around 10 mph until 2400, then southeast.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph.
Mixing Height.......3400-5400 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...10 percent.
Max temperature.....67-72.
24 hr trend......Unchanged.
Min humidity........30-36 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
around 10 mph. Gusts up to 25 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 15 to 20 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then showers likely and
slight chance of thunderstorms after midnight. Lows in the mid
40s. Winds generally less than 10 mph.
.LABOR DAY...Cooler. Partly cloudy with showers and chance of
thunderstorms. Lows in the mid 30s. Highs in the mid 50s.
Southwest winds around 10 mph.
.TUESDAY...Mostly clear. Lows in the upper 30s. Highs around 60.
Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the mid 60s. Winds
generally less than 10 mph.
.THURSDAY...Partly cloudy with chance of showers and slight
chance of thunderstorms. Lows in the lower 40s. Highs in the mid
60s.
.FRIDAY...Partly cloudy. Chance of showers in the morning, then
chance of showers and slight chance of thunderstorms in the
afternoon. Highs in the lower 60s.
$$
WYZ416-052130-
West Wind River Mountains/East Zone Bridger Teton NF-
129 PM MDT Fri Sep 4 2026
.THIS AFTERNOON...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....67-72.
24 hr trend......6 degrees warmer.
Min humidity........19-25 percent.
24 hr trend......1 percent drier.
20-foot winds.......Southwest winds around 20 mph with gusts to
around 35 mph.
Ridge top winds.....Southwest around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 30 mph.
Mixing Height.......7600-8800 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....44-49.
24 hr trend......3 degrees warmer.
Max humidity........57-63 percent.
24 hr trend......7 percent wetter.
Humidity recovery...Good.
20-foot winds.......South winds 10 to 15 mph. Gusts up to 30 mph
until 2400, then 20 mph.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph.
Mixing Height.......3400-5400 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....65-70.
24 hr trend......1 degree cooler.
Min humidity........25-31 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then around
25 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 6400-8400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.SATURDAY NIGHT...
Sky/weather.........Clear then becoming partly cloudy.
Chance of thunder...0 percent.
Min temperature.....43-48.
24 hr trend......Unchanged.
Max humidity........48-54 percent.
24 hr trend......10 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds around 10 mph with gusts to
around 25 mph until 2100, then
downslope/downvalley 4-7 mph.
Ridge top winds.....South around 10 mph until 2400, then east.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph.
Mixing Height.......3400-5400 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers in the afternoon.
Chance of showers 20 percent.
Chance of thunder...0 percent.
Max temperature.....63-68.
24 hr trend......1 degree cooler.
Min humidity........29-35 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
around 15 mph with gusts to around 30 mph.
Ridge top winds.....South around 10 mph until 1200, then around 20
mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 15 to 20 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Showers likely and slight chance of
thunderstorms. Lows in the lower 40s. South winds around 15 mph.
.LABOR DAY...Cooler. Partly cloudy with showers and chance of
thunderstorms. Lows in the mid 30s. Highs in the lower 50s.
Southwest winds around 15 mph.
.TUESDAY...Mostly clear. Lows in the upper 30s. Highs in the
upper 50s. West winds around 10 mph.
.WEDNESDAY...Partly cloudy with chance of showers and slight
chance of thunderstorms. Lows in the lower 40s. Highs in the
lower 60s. Winds generally less than 10 mph.
.THURSDAY...Partly cloudy with chance of showers and slight
chance of thunderstorms. Lows in the lower 40s. Highs in the
lower 60s.
.FRIDAY...Partly cloudy. Chance of showers in the morning, then
chance of showers and thunderstorms in the afternoon. Highs in
the upper 50s.
$$
WYZ288-052130-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
129 PM MDT Fri Sep 4 2026
.THIS AFTERNOON...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....70-75.
24 hr trend......6 degrees warmer.
Min humidity........16-22 percent.
24 hr trend......Unchanged.
20-foot winds.......Southwest winds around 20 mph with gusts to
around 35 mph.
Ridge top winds.....Southwest around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 30 mph.
Mixing Height.......7400-9000 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....48-53.
24 hr trend......3 degrees warmer.
Max humidity........48-54 percent.
24 hr trend......3 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds 10 to 15 mph. Gusts up to 35
mph until 2400, then 25 mph.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......3800-5800 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....69-74.
24 hr trend......1 degree cooler.
Min humidity........25-31 percent.
24 hr trend......5 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 20 to 25 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.SATURDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....48-53.
24 hr trend......Unchanged.
Max humidity........41-47 percent.
24 hr trend......7 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds around 10 mph. Gusts up to 25
mph until 2400, then 15 mph.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......3400-5400 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers in the afternoon.
Chance of showers 20 percent.
Chance of thunder...0 percent.
Max temperature.....68-73.
24 hr trend......1 degree cooler.
Min humidity........25-31 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest 10 to 15 mph with gusts to around 30
mph.
Ridge top winds.....Southwest around 10 mph until 1200, then south
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Showers likely and slight chance
of thunderstorms in the evening, then chance of showers after
midnight. Lows in the upper 40s. Southwest winds around 15 mph.
.LABOR DAY...Cooler, breezy. Mostly clear. Chance of showers and
slight chance of thunderstorms. Lows in the lower 40s. Highs in
the upper 50s. Southwest winds around 25 mph.
.TUESDAY...Mostly clear. Lows in the mid 40s. Highs in the lower
60s. West winds around 15 mph.
.WEDNESDAY...Partly cloudy with chance of showers and slight
chance of thunderstorms. Lows in the upper 40s. Highs in the mid
60s. West winds around 10 mph.
.THURSDAY THROUGH FRIDAY...Partly cloudy with chance of showers
and slight chance of thunderstorms. Lows in the upper 40s. Highs
63 to 68.
$$
WYZ414-052130-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
129 PM MDT Fri Sep 4 2026
.THIS AFTERNOON...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....68-73.
24 hr trend......6 degrees warmer.
Min humidity........18-24 percent.
24 hr trend......Unchanged.
20-foot winds.......Southwest winds around 15 mph with gusts to
around 35 mph.
Ridge top winds.....Southwest around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 25 mph.
Mixing Height.......8200-9200 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....45-50.
24 hr trend......4 degrees warmer.
Max humidity........60-66 percent.
24 hr trend......6 percent wetter.
Humidity recovery...Good.
20-foot winds.......South winds 10 to 15 mph with gusts to around
35 mph.
Ridge top winds.....South 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 15 to 20 mph.
Mixing Height.......3600-5600 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....68-73.
24 hr trend......1 degree cooler.
Min humidity........21-27 percent.
24 hr trend......2 percent wetter.
20-foot winds.......South winds 10 to 15 mph with gusts to around
30 mph.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 20 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.SATURDAY NIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....43-48.
24 hr trend......1 degree cooler.
Max humidity........58-64 percent.
24 hr trend......5 percent drier.
Humidity recovery...Good.
20-foot winds.......Southwest winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph until 0300, then
southeast around 10 mph. Gusts up to 25 mph.
Ridge top winds.....South around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph.
Mixing Height.......3400-5400 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...10 percent.
Max temperature.....66-71.
24 hr trend......1 degree cooler.
Min humidity........27-33 percent.
24 hr trend......6 percent wetter.
20-foot winds.......South winds 10 to 15 mph with gusts to around
30 mph.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 15 to 20 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Showers likely and slight chance of
thunderstorms. Lows in the mid 40s. South winds around 10 mph.
.LABOR DAY...Cooler. Partly cloudy with showers and chance of
thunderstorms. Lows in the mid 30s. Highs in the upper 50s.
Southwest winds around 10 mph.
.TUESDAY...Mostly clear. Lows in the lower 40s. Highs in the
lower 60s. Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Chance of showers and slight chance
of thunderstorms. Lows in the mid 40s. Highs in the upper 60s.
Winds generally less than 10 mph.
.THURSDAY...Partly cloudy with chance of showers and slight
chance of thunderstorms. Lows in the mid 40s. Highs in the mid
60s.
.FRIDAY...Partly cloudy. Chance of showers in the morning, then
chance of showers and slight chance of thunderstorms in the
afternoon. Highs in the mid 60s.
$$
WYZ278-052130-
Upper Green River Basin/Rock Springs BLM-
Including the cities of Big Piney, Farson, and Pinedale
129 PM MDT Fri Sep 4 2026
.THIS AFTERNOON...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....71-76.
24 hr trend......5 degrees warmer.
Min humidity........15-21 percent.
24 hr trend......Unchanged.
20-foot winds.......Southwest winds around 15 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 25 mph.
Mixing Height.......9400-10600 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....46-51.
24 hr trend......5 degrees warmer.
Max humidity........56-62 percent.
24 hr trend......2 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds around 10 mph with gusts to
around 30 mph until 2100, then
downslope/downvalley 4-7 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......4400-6400 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....70-75.
24 hr trend......1 degree cooler.
Min humidity........18-24 percent.
24 hr trend......5 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest 10 to 15 mph. Gusts up to 25 mph.
Ridge top winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 7600-9600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.SATURDAY NIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....45-50.
24 hr trend......1 degree cooler.
Max humidity........53-59 percent.
24 hr trend......6 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds around 10 mph with gusts to
around 25 mph until 2100, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Southwest around 10 mph until 2400, then
northeast.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......4000-6000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers in the afternoon.
Slight chance of thunderstorms late in the
afternoon. Chance of precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....67-72.
24 hr trend......2 degrees cooler.
Min humidity........22-28 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
10 to 15 mph with gusts to around 25 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then around 20
mph.
Mixing Height.......2000-4000 ft agl until 1200, then 7600-9600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Showers likely and slight chance
of thunderstorms in the evening, then chance of showers and
slight chance of thunderstorms after midnight. Lows in the mid
40s. South winds around 10 mph.
.LABOR DAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the upper 30s. Highs in the mid 60s. West
winds around 15 mph.
.TUESDAY...Mostly clear. Lows in the lower 40s. Highs in the
upper 60s. Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the lower 70s. Winds
generally less than 10 mph.
.THURSDAY THROUGH FRIDAY...Partly cloudy with chance of showers
and slight chance of thunderstorms. Lows in the mid 40s. Highs
69 to 74.
$$
WYZ277-052130-
Lincoln and Uinta Counties/Lower Elevations-
Including the cities of Evanston, Fort Bridger, and Kemmerer
129 PM MDT Fri Sep 4 2026
.THIS AFTERNOON...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....73-78.
24 hr trend......5 degrees warmer.
Min humidity........14-20 percent.
24 hr trend......Unchanged.
20-foot winds.......Southwest winds around 20 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 30 mph.
Mixing Height.......9200-10000 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....48-53.
24 hr trend......3 degrees warmer.
Max humidity........50-56 percent.
24 hr trend......11 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......4000-6000 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....71-76.
24 hr trend......Unchanged.
Min humidity........16-22 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 25 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then around
25 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 7600-9600 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.SATURDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....46-51.
24 hr trend......2 degrees cooler.
Max humidity........45-51 percent.
24 hr trend......6 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds around 10 mph with gusts to
around 25 mph until 2100, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Southwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......3600-5600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of showers and slight chance of
thunderstorms in the afternoon. Chance of
precipitation 40 percent.
Chance of thunder...20 percent.
Max temperature.....69-74.
24 hr trend......3 degrees cooler.
Min humidity........26-32 percent.
24 hr trend......8 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
around 10 mph. Gusts up to 25 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent until 1200, then 10 percent.
Transport winds.....Southwest around 10 mph until 1200, then around
20 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then slight chance of
showers and thunderstorms after midnight. Lows in the upper 40s.
South winds around 10 mph.
.LABOR DAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the upper 30s. Highs in the mid 60s. West
winds around 15 mph.
.TUESDAY...Mostly clear. Lows in the mid 40s. Highs around 70.
Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
Winds generally less than 10 mph.
.THURSDAY...Partly cloudy with chance of showers and slight
chance of thunderstorms. Lows in the upper 40s. Highs in the
lower 70s.
.FRIDAY...Partly cloudy. Chance of showers in the morning, then
slight chance of showers and thunderstorms in the afternoon.
Highs around 70.
$$
WYZ279-052130-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Including the cities of Green River, Rock Springs, and Wamsutter
129 PM MDT Fri Sep 4 2026
.THIS AFTERNOON...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....73-78.
24 hr trend......5 degrees warmer.
Min humidity........19-25 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Southwest winds around 20 mph with gusts to
around 35 mph.
Ridge top winds.....Southwest around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 30 mph.
Mixing Height.......8200-9600 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....50-55.
24 hr trend......Unchanged.
Max humidity........59-65 percent.
24 hr trend......10 percent wetter.
Humidity recovery...Good.
20-foot winds.......South winds 10 to 15 mph with gusts to around
30 mph.
Ridge top winds.....South 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 15 to 20 mph.
Mixing Height.......3800-5800 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....73-78.
24 hr trend......Unchanged.
Min humidity........26-32 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
10 to 15 mph. Gusts up to 30 mph.
Ridge top winds.....South 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph until 1200, then southwest
around 25 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 7600-9600 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.SATURDAY NIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....48-53.
24 hr trend......2 degrees cooler.
Max humidity........54-60 percent.
24 hr trend......7 percent drier.
Humidity recovery...Moderate.
20-foot winds.......South winds 10 to 15 mph with gusts to around
25 mph until 2400, then downslope/downvalley
4-7 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......3600-5600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.SUNDAY...
Sky/weather.........Partly cloudy. Slight chance of showers in the
afternoon. Slight chance of thunderstorms late
in the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....71-76.
24 hr trend......2 degrees cooler.
Min humidity........35-41 percent.
24 hr trend......5 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
10 to 15 mph with gusts to around 30 mph.
Ridge top winds.....South around 10 mph until 1200, then around 20
mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Showers likely and slight chance
of thunderstorms in the evening, then chance of showers after
midnight. Lows in the lower 50s. Southwest winds around 15 mph.
.LABOR DAY...Mostly clear with slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the lower 70s. West
winds around 15 mph.
.TUESDAY...Mostly clear. Lows in the upper 40s. Highs in the
lower 70s. Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the upper 70s.
Winds generally less than 10 mph.
.THURSDAY THROUGH FRIDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the lower 50s. Highs 73 to 78.
$$
WYZ289-052130-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
129 PM MDT Fri Sep 4 2026
...RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING...
.THIS AFTERNOON...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....78-83.
24 hr trend......6 degrees warmer.
Min humidity........13-19 percent.
24 hr trend......5 percent wetter.
20-foot winds.......Southwest winds around 20 mph with gusts to
around 40 mph.
Ridge top winds.....Southwest around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 30 mph.
Mixing Height.......9400-10000 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....54-59.
24 hr trend......Unchanged.
Max humidity........44-50 percent.
24 hr trend......9 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds around 20 mph with gusts to
around 35 mph until 2100, then south around 10
mph with gusts to around 35 mph.
Ridge top winds.....South 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......4200-6200 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Very good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....77-82.
24 hr trend......1 degree cooler.
Min humidity........18-24 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then around
25 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 8000-10000 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.SATURDAY NIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....52-57.
24 hr trend......1 degree cooler.
Max humidity........40-46 percent.
24 hr trend......6 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds around 10 mph with gusts to
around 30 mph until 2100, then
downslope/downvalley 4-7 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......4000-6000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.SUNDAY...
Sky/weather.........Partly cloudy. Slight chance of showers in the
afternoon. Slight chance of thunderstorms late
in the afternoon. Chance of precipitation 20
percent.
Chance of thunder...10 percent.
Max temperature.....77-82.
24 hr trend......1 degree cooler.
Min humidity........18-24 percent.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
10 to 15 mph with gusts to around 30 mph.
Ridge top winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then around
20 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 8000-10000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Showers likely and slight chance
of thunderstorms in the evening, then chance of showers after
midnight. Lows in the mid 50s. Southwest winds around 15 mph.
.LABOR DAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
Southwest winds around 20 mph.
.TUESDAY...Mostly clear. Lows in the upper 40s. Highs in the
lower 70s. West winds around 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of showers. Lows in
the lower 50s. Highs in the mid 70s. Winds generally less than
10 mph.
.THURSDAY THROUGH FRIDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the lower 50s. Highs 73 to 78.
$$
WYZ300-052130-
Casper Mountain-
129 PM MDT Fri Sep 4 2026
.THIS AFTERNOON...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....79-84.
24 hr trend......5 degrees warmer.
Min humidity........16-22 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Southwest winds around 20 mph with gusts to
around 35 mph.
Ridge top winds.....Southwest around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 30 mph.
Mixing Height.......9200-9800 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....57-62.
24 hr trend......Unchanged.
Max humidity........34-40 percent.
24 hr trend......6 percent wetter.
Humidity recovery...Poor.
20-foot winds.......South winds 10 to 15 mph. Gusts up to 30 mph
until 2400, then 20 mph.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......3800-5800 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers early in the
afternoon. Slight chance of thunderstorms late
in the afternoon. Chance of precipitation 20
percent.
Chance of thunder...10 percent.
Max temperature.....79-84.
24 hr trend......1 degree cooler.
Min humidity........21-27 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 25 mph.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph.
Mixing Height.......2600-4600 ft agl until 1200, then 8400-10400 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.SATURDAY NIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....57-62.
24 hr trend......Unchanged.
Max humidity........43-49 percent.
24 hr trend......8 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......Downslope/downvalley 4-7 mph until 2400, then
south around 10 mph. Gusts up to 20 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph.
Mixing Height.......3600-5600 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....78-83.
24 hr trend......Unchanged.
Min humidity........21-27 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph with gusts to around 25
mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......2600-4600 ft agl until 1200, then 8400-10400 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then chance of showers
after midnight. Lows in the upper 50s. Southwest winds around
10 mph.
.LABOR DAY THROUGH TUESDAY...Mostly clear. Lows in the lower 50s.
Highs 70 to 75. Southwest winds 10 to 20 mph.
.WEDNESDAY...Partly cloudy. Lows in the mid 50s. Highs in the mid
70s. Winds generally less than 10 mph.
.THURSDAY THROUGH FRIDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the mid 50s. Highs in the mid
70s.
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