Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
633
FNUS55 KRIW 050843
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
243 AM MDT Sat Sep 5 2026
.DISCUSSION...
...Yellowstone NP and Teton dispatch areas (includes fire weather
zones 140...414...415...and 416)...
Today will be another dry and warm day across the area. Breezy
conditions are possible in the afternoon. Relative humidity
should remain above critical levels, but may drop into the teens
at times this afternoon. However, elevated fire weather remains
likely this afternoon. Mixing and smoke dispersal will be
generally good to excellent in the afternoon.
...Cody dispatch area (includes fire weather zones 275...276...
282...283...285...286...287...288...and 289)...
Expect a warm to hot and dry day across the dispatch area.
Relative humidity will fall to around 15 percent at times this
afternoon across the lower elevations. However, wind should
remain light to moderate for the most part. Nevertheless, elevated
fire weather will be likely this afternoon. Mixing and smoke
dispersal will be very good to excellent this afternoon.
...Casper dispatch area (includes fire weather zones 277...278...
279...280...281...285...289...and 300)...
Expect a warm to hot and dry day across the dispatch area.
Relative humidity will fall to around 15 percent at times this
afternoon across the lower elevations. However, wind should
remain light to moderate for the most part. Nevertheless, elevated
fire weather will be likely this afternoon. Brief periods of
critical fire weather are possible this afternoon, especially in
Zone 279 and Zone 280. Mixing and smoke dispersal will be very
good to excellent this afternoon.
...Thunderstorms imply strong gusty and erratic winds...
WYZ280-061045-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
243 AM MDT Sat Sep 5 2026
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....85-90.
24 hr trend......1 degree warmer.
Min humidity........14-20 percent.
24 hr trend......1 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 15 to 20 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 8800-10800 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....57-62.
24 hr trend......1 degree cooler.
Max humidity........47-53 percent.
24 hr trend......7 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......South winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 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.....85-90.
24 hr trend......1 degree cooler.
Min humidity........13-19 percent.
24 hr trend......1 percent drier.
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 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 8400-10400 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Cloudy. Slight chance of showers and
thunderstorms in the evening, then slight chance of showers after
midnight. Lows in the lower 60s. Southwest winds around 15 mph.
.LABOR DAY...Mostly clear. Lows in the lower 50s. Highs in the
upper 70s. Southwest winds around 20 mph.
.TUESDAY...Mostly clear. Lows in the mid 40s. Highs in the mid
70s. Northwest winds around 15 mph.
.WEDNESDAY...Partly cloudy. Lows in the lower 50s. Highs in the
upper 70s. Winds generally less than 10 mph.
.THURSDAY THROUGH FRIDAY...Mostly clear. Lows in the mid 50s.
Highs in the lower 80s.
$$
WYZ283-061045-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
243 AM MDT Sat Sep 5 2026
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....81-86.
24 hr trend......1 degree warmer.
Min humidity........16-22 percent.
24 hr trend......4 percent wetter.
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.....Southwest 15 to 20 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 8400-10400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....51-56.
24 hr trend......1 degree cooler.
Max humidity........43-49 percent.
24 hr trend......1 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds around 10 mph and gusty.
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 until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....80-85.
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 around
20 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 7400-9400 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 in the upper 50s. Southwest winds around
15 mph.
.LABOR DAY...Mostly clear. Lows in the upper 40s. Highs in the
mid 70s. West winds around 20 mph.
.TUESDAY...Mostly clear. Lows in the upper 40s. Highs in the mid
70s. Northwest winds around 10 mph.
.WEDNESDAY...Partly cloudy. Lows in the lower 50s. Highs in the
upper 70s. Winds generally less than 10 mph.
.THURSDAY...Partly cloudy. Lows in the mid 50s. Highs around 80.
.FRIDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 70s.
$$
WYZ285-061045-
South Bighorn Mountains-
243 AM MDT Sat Sep 5 2026
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....78-83.
24 hr trend......Unchanged.
Min humidity........16-22 percent.
24 hr trend......4 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 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 very good to
excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....55-60.
24 hr trend......2 degrees cooler.
Max humidity........40-46 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 0300, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......4200-6200 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...0 percent.
Max temperature.....78-83.
24 hr trend......1 degree cooler.
Min humidity........14-20 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest 10 to 15 mph. Gusts up to 25 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then 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 7400-9400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Cloudy with chance of showers. Lows in the upper
50s. Southwest winds around 20 mph.
.LABOR DAY...Not as warm. Breezy. Mostly clear. Lows in the upper
40s. Highs in the lower 70s. West winds around 25 mph.
.TUESDAY...Mostly clear. Lows in the mid 40s. Highs in the mid
60s. Northwest winds around 10 mph.
.WEDNESDAY...Partly cloudy. Lows in the lower 50s. Highs in the
lower 70s. West winds around 10 mph.
.THURSDAY...Partly cloudy. Lows in the lower 50s. Highs in the
lower 70s.
.FRIDAY...Mostly sunny. Highs in the lower 70s.
$$
WYZ281-061045-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
243 AM MDT Sat Sep 5 2026
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....84-89.
24 hr trend......1 degree cooler.
Min humidity........16-22 percent.
24 hr trend......4 percent wetter.
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 around 10 mph until 1200, then around
20 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 8200-10200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....57-62.
24 hr trend......1 degree cooler.
Max humidity........50-56 percent.
24 hr trend......13 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......Southwest 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.....West 10 to 15 mph.
Mixing Height.......4600-6600 ft agl until 2400, then 400 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.....83-88.
24 hr trend......1 degree cooler.
Min humidity........17-23 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 25 mph.
Ridge top winds.....South 10 to 15 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 8000-10000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Cloudy with slight chance of showers. Lows in the
mid 60s. Southwest winds around 15 mph.
.LABOR DAY...Mostly clear. Lows in the lower 50s. Highs in the
lower 80s. West winds around 15 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear. Lows 49 to 54. Highs
75 to 80. Southwest winds around 10 mph.
.THURSDAY...Partly cloudy. Lows in the mid 50s. Highs in the
lower 80s.
.FRIDAY...Mostly sunny. Highs in the lower 80s.
$$
WYZ282-061045-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
243 AM MDT Sat Sep 5 2026
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....81-86.
24 hr trend......Unchanged.
Min humidity........13-19 percent.
24 hr trend......5 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 7800-9800 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....55-60.
24 hr trend......2 degrees cooler.
Max humidity........50-56 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.....South around 15 mph until 2400, then west.
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.....81-86.
24 hr trend......1 degree cooler.
Min humidity........14-20 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 25 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......800-2800 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy with slight chance of showers. Lows
in the lower 60s. South winds around 15 mph.
.LABOR DAY...Mostly clear. Lows around 50. Highs around 80.
Southwest winds around 15 mph.
.TUESDAY...Mostly clear. Lows around 50. Highs in the mid 70s.
North 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. Lows in the mid 50s. Highs in the
lower 80s.
.FRIDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs around 80.
$$
WYZ275-061045-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
243 AM MDT Sat Sep 5 2026
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....79-84.
24 hr trend......3 degrees cooler.
Min humidity........14-20 percent.
24 hr trend......6 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200. Winds
south around 10 mph after 1500. Gusts up to 15
mph.
Ridge top winds.....Southwest around 10 mph until 1200, then south.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......800-2800 ft agl until 1200, then 6400-8400 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....54-59.
24 hr trend......1 degree cooler.
Max humidity........51-57 percent.
24 hr trend......13 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......South winds around 10 mph until 2100. Northwest
after 2400. Gusts up to 25 mph.
Ridge top winds.....South 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.....78-83.
24 hr trend......1 degree cooler.
Min humidity........16-22 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southeast 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.......600-2600 ft agl until 1200, then 5000-7000 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Slight chance of showers and
thunderstorms after midnight. Lows in the upper 50s. South winds
around 15 mph.
.LABOR DAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the upper 70s.
Southwest winds around 15 mph.
.TUESDAY...Clear. Lows in the upper 40s. Highs in the lower 70s.
Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Lows in the lower 50s. Highs in the
upper 70s. Winds generally less than 10 mph.
.THURSDAY THROUGH FRIDAY...Partly cloudy. Lows in the mid 50s.
Highs 78 to 83.
$$
WYZ276-061045-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
243 AM MDT Sat Sep 5 2026
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....78-83.
24 hr trend......3 degrees cooler.
Min humidity........22-28 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southeast around 10 mph. Gusts up to 20 mph.
Ridge top winds.....West around 10 mph until 1200, then southeast.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph until 1200, then south.
Mixing Height.......1600-3600 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....54-59.
24 hr trend......2 degrees cooler.
Max humidity........47-53 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 25
mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......3800-5800 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........26-32 percent.
24 hr trend......4 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.....Southwest around 10 mph until 1200, then south
around 20 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Slight chance of showers and
thunderstorms in the evening, then chance of showers and slight
chance of thunderstorms after midnight. Lows in the upper 50s.
West winds around 10 mph.
.LABOR DAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
West winds around 15 mph.
.TUESDAY...Mostly clear. Lows in the upper 40s. Highs around 70.
Northwest winds around 10 mph.
.WEDNESDAY...Partly cloudy. Lows in the lower 50s. Highs in the
mid 70s. Southwest winds around 10 mph.
.THURSDAY...Partly cloudy. Lows in the mid 50s. Highs in the
upper 70s.
.FRIDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 70s.
$$
WYZ287-061045-
Owl Creek Mountains-
243 AM MDT Sat Sep 5 2026
.TODAY...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....77-82.
24 hr trend......1 degree warmer.
Min humidity........14-20 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
around 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.....South around 10 mph until 1200, then around 20
mph.
Mixing Height.......2000-4000 ft agl until 1200, then 7800-9800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....51-56.
24 hr trend......1 degree cooler.
Max humidity........39-45 percent.
24 hr trend......7 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds around 10 mph with gusts to
around 25 mph until 2400, 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.......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.....75-80.
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
around 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.....South around 10 mph until 1200, then southwest
around 20 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Poor until 1200, then very good to excellent.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Chance of showers in the evening,
then slight chance of showers after midnight. Lows in the upper
50s. Southwest winds around 15 mph.
.LABOR DAY...Mostly clear. 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
upper 60s. Northwest winds around 10 mph.
.WEDNESDAY...Partly cloudy. Lows in the mid 50s. Highs in the
lower 70s. Southwest winds around 10 mph.
.THURSDAY...Partly cloudy. Lows in the mid 50s. Highs in the mid
70s.
.FRIDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 70s.
$$
WYZ286-061045-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
243 AM MDT Sat Sep 5 2026
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....69-74.
24 hr trend......1 degree cooler.
Min humidity........23-29 percent.
24 hr trend......4 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.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....46-51.
24 hr trend......1 degree cooler.
Max humidity........52-58 percent.
24 hr trend......3 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds around 10 mph until 2100, 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.......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.....69-74.
24 hr trend......1 degree cooler.
Min humidity........25-31 percent.
24 hr trend......2 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 7600-9600 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 showers likely and
slight chance of thunderstorms after midnight. Lows in the upper
40s. Southwest winds around 10 mph.
.LABOR DAY...Cooler. Mostly clear with chance of showers and
slight chance of thunderstorms. Lows in the upper 30s. Highs in
the upper 50s. West winds around 20 mph.
.TUESDAY...Mostly clear. Lows around 40. Highs in the upper 50s.
West winds around 10 mph.
.WEDNESDAY...Partly cloudy. Lows in the mid 40s. Highs in the mid
60s. West winds around 10 mph.
.THURSDAY THROUGH FRIDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the mid 40s. Highs in the mid
60s.
$$
WYZ140-061045-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
243 AM MDT Sat Sep 5 2026
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....68-73.
24 hr trend......1 degree warmer.
Min humidity........25-31 percent.
24 hr trend......2 percent drier.
20-foot winds.......South winds 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 15 mph until 1200, then southwest
around 25 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....41-46.
24 hr trend......Unchanged.
Max humidity........61-67 percent.
24 hr trend......5 percent drier.
Humidity recovery...Good.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....South around 10 mph.
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...0 percent.
Max temperature.....69-74.
24 hr trend......Unchanged.
Min humidity........24-30 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
around 10 mph. Gusts up to 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 7800-9800 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Slight chance of showers and
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 slight chance
of thunderstorms. Lows in the lower 30s. Highs in the lower 50s.
Southwest winds around 15 mph.
.TUESDAY...Mostly clear. Lows in the mid 30s. Highs in the mid
50s. Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Lows around 40. Highs in the lower
60s. Winds generally less than 10 mph.
.THURSDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the lower 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.
$$
WYZ415-061045-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
243 AM MDT Sat Sep 5 2026
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....69-74.
24 hr trend......1 degree cooler.
Min humidity........26-32 percent.
24 hr trend......2 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.....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 7000-9000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....42-47.
24 hr trend......Unchanged.
Max humidity........55-61 percent.
24 hr trend......6 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....South around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph.
Mixing Height.......3600-5600 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...0 percent.
Max temperature.....67-72.
24 hr trend......2 degrees cooler.
Min humidity........28-34 percent.
24 hr trend......3 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.....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 7400-9400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Cloudy. Chance of showers and slight chance of
thunderstorms in the evening, then showers 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 slight 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 in the
upper 50s. Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Lows in the lower 40s. Highs in the
mid 60s. Winds generally less than 10 mph.
.THURSDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the lower 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.
$$
WYZ416-061045-
West Wind River Mountains/East Zone Bridger Teton NF-
243 AM MDT Sat Sep 5 2026
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....66-71.
24 hr trend......1 degree cooler.
Min humidity........23-29 percent.
24 hr trend......5 percent wetter.
20-foot winds.......South winds 10 to 15 mph with gusts to around
25 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.......1800-3800 ft agl until 1200, then 6400-8400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....43-48.
24 hr trend......Unchanged.
Max humidity........48-54 percent.
24 hr trend......13 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.
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.
.SUNDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers late in the afternoon.
Chance of showers 20 percent.
Chance of thunder...0 percent.
Max temperature.....63-68.
24 hr trend......3 degrees cooler.
Min humidity........29-35 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 30 mph.
Ridge top winds.....South 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 6400-8400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...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.
South winds around 10 mph.
.LABOR DAY...Cooler. Partly cloudy with showers likely and slight
chance of thunderstorms. Lows in the lower 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. Lows in the lower 40s. Highs in the
lower 60s. West winds around 10 mph.
.THURSDAY THROUGH FRIDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the lower 40s. Highs in the
lower 60s.
$$
WYZ288-061045-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
243 AM MDT Sat Sep 5 2026
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....70-75.
24 hr trend......Unchanged.
Min humidity........23-29 percent.
24 hr trend......4 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 20 to 25 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....47-52.
24 hr trend......Unchanged.
Max humidity........41-47 percent.
24 hr trend......9 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds around 10 mph and gusty.
Ridge top winds.....Southwest 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 until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers late in the afternoon.
Chance of showers 20 percent.
Chance of thunder...0 percent.
Max temperature.....69-74.
24 hr trend......1 degree cooler.
Min humidity........25-31 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 15 to 20 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 6800-8800 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 showers likely and
slight chance of thunderstorms after midnight. Lows in the upper
40s. Southwest winds around 15 mph.
.LABOR DAY...Cooler, breezy. Mostly clear with chance of showers
and slight chance of thunderstorms. Lows around 40. Highs in the
upper 50s. West winds around 25 mph.
.TUESDAY...Mostly clear. Lows in the lower 40s. Highs in the
lower 60s. West winds around 10 mph.
.WEDNESDAY...Partly cloudy. Lows in the mid 40s. Highs in the mid
60s. West winds around 10 mph.
.THURSDAY THROUGH FRIDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the upper 40s. Highs in the
mid 60s.
$$
WYZ414-061045-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
243 AM MDT Sat Sep 5 2026
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....68-73.
24 hr trend......Unchanged.
Min humidity........19-25 percent.
24 hr trend......1 percent wetter.
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 15 to 20 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....44-49.
24 hr trend......1 degree cooler.
Max humidity........57-63 percent.
24 hr trend......8 percent drier.
Humidity recovery...Good.
20-foot winds.......Southwest winds around 10 mph until 2100, then
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.....Good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers late in the afternoon.
Chance of showers 20 percent.
Chance of thunder...0 percent.
Max temperature.....66-71.
24 hr trend......3 degrees cooler.
Min humidity........26-32 percent.
24 hr trend......7 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 7400-9400 ft
agl.
Smoke dispersal.....Fair to good 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. South winds around 10 mph.
.LABOR DAY...Cooler. Mostly clear with showers likely and slight
chance of thunderstorms. Lows in the mid 30s. Highs in the upper
50s. West winds around 10 mph.
.TUESDAY...Mostly clear. Lows around 40. Highs in the lower 60s.
Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Lows in the mid 40s. Highs in the
upper 60s. Winds generally less than 10 mph.
.THURSDAY THROUGH FRIDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the mid 40s. Highs in the mid
60s.
$$
WYZ278-061045-
Upper Green River Basin/Rock Springs BLM-
Including the cities of Big Piney, Farson, and Pinedale
243 AM MDT Sat Sep 5 2026
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....71-76.
24 hr trend......Unchanged.
Min humidity........17-23 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest 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.....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.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....45-50.
24 hr trend......1 degree cooler.
Max humidity........52-58 percent.
24 hr trend......9 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds around 10 mph and gusty until
2100, then downslope/downvalley 4-7 mph.
Ridge top winds.....Southwest around 10 mph until 2400, then
southeast.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph.
Mixing Height.......4200-6200 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.....67-72.
24 hr trend......3 degrees cooler.
Min humidity........22-28 percent.
24 hr trend......5 percent wetter.
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.....South around 10 mph until 1200, then southwest
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 7600-9600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy with chance of showers and slight
chance of thunderstorms. Lows in the upper 40s. South winds
around 10 mph.
.LABOR DAY...Mostly clear with 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. Lows in the mid 40s. Highs in the
lower 70s. Winds generally less than 10 mph.
.THURSDAY THROUGH FRIDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the mid 40s. Highs in the
lower 70s.
$$
WYZ277-061045-
Lincoln and Uinta Counties/Lower Elevations-
Including the cities of Evanston, Fort Bridger, and Kemmerer
243 AM MDT Sat Sep 5 2026
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....73-78.
24 hr trend......1 degree warmer.
Min humidity........15-21 percent.
24 hr trend......2 percent drier.
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 15 to 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 to
excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....46-51.
24 hr trend......1 degree cooler.
Max humidity........44-50 percent.
24 hr trend......9 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 until 0300, then
southwest around 10 mph with gusts to around 15
mph.
Ridge top winds.....Southwest around 10 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 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.....69-74.
24 hr trend......4 degrees cooler.
Min humidity........25-31 percent.
24 hr trend......9 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 15 to 20 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Fair to good 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 slight chance of
showers and thunderstorms after midnight. Lows in the upper 40s.
South winds around 10 mph.
.LABOR DAY...Mostly clear with slight chance of showers and
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. Lows in the upper 40s. 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 upper 40s. Highs in the
lower 70s.
$$
WYZ279-061045-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Including the cities of Green River, Rock Springs, and Wamsutter
243 AM MDT Sat Sep 5 2026
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....74-79.
24 hr trend......1 degree warmer.
Min humidity........25-31 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 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 very good to
excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....49-54.
24 hr trend......1 degree cooler.
Max humidity........53-59 percent.
24 hr trend......10 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds around 15 mph with gusts to
around 25 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.......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.
Slight chance of showers late in the morning.
Slight chance of showers and thunderstorms late
in the afternoon. Chance of precipitation 20
percent.
Chance of thunder...10 percent.
Max temperature.....71-76.
24 hr trend......3 degrees cooler.
Min humidity........33-39 percent.
24 hr trend......5 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900. Winds
southwest around 20 mph with gusts to around 30
mph after 1500.
Ridge top winds.....South around 10 mph until 1200, then southwest
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 6400-8400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Cloudy. Chance of showers 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...Partly cloudy with slight chance of showers. Lows in
the mid 40s. Highs in the lower 70s. West winds around 15 mph.
.TUESDAY...Mostly clear. Lows in the mid 40s. Highs in the lower
70s. Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Lows around 50. Highs in the mid 70s.
Winds generally less than 10 mph.
.THURSDAY THROUGH FRIDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows around 50. Highs in the mid 70s.
$$
WYZ289-061045-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
243 AM MDT Sat Sep 5 2026
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....78-83.
24 hr trend......Unchanged.
Min humidity........17-23 percent.
24 hr trend......2 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 7800-9800 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....52-57.
24 hr trend......1 degree cooler.
Max humidity........42-48 percent.
24 hr trend......8 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 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......4200-6200 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...0 percent.
Max temperature.....78-83.
24 hr trend......2 degrees cooler.
Min humidity........17-23 percent.
24 hr trend......1 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 around 10 mph until 1200, then 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 7800-9800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Cloudy. Chance of showers and slight chance of
thunderstorms in the evening, then chance of showers after
midnight. Lows in the mid 50s. Southwest winds around 20 mph.
.LABOR DAY THROUGH TUESDAY...Mostly clear. Lows in the mid 40s.
Highs in the lower 70s. West winds 10 to 20 mph.
.WEDNESDAY...Partly cloudy. Lows in the lower 50s. Highs in the
mid 70s. Winds generally less than 10 mph.
.THURSDAY...Partly cloudy. Lows in the lower 50s. Highs in the
mid 70s.
.FRIDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 70s.
$$
WYZ300-061045-
Casper Mountain-
243 AM MDT Sat Sep 5 2026
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....80-85.
24 hr trend......Unchanged.
Min humidity........20-26 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Southwest winds around 10 mph with higher
gusts.
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.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....56-61.
24 hr trend......1 degree cooler.
Max humidity........46-52 percent.
24 hr trend......9 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......Downslope/downvalley 4-7 mph until 2400, then
south around 10 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....South around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph.
Mixing Height.......4200-6200 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...0 percent.
Max temperature.....79-84.
24 hr trend......Unchanged.
Min humidity........19-25 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, 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.......2800-4800 ft agl until 1200, then 8800-10800 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Slight chance of showers and
thunderstorms in the evening, then slight chance of showers after
midnight. Lows in the upper 50s. Southwest winds around 10 mph.
.LABOR DAY...Not as warm. Partly cloudy. Lows around 50. Highs in
the lower 70s. Southwest winds around 20 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear. Lows 47 to 52. Highs
69 to 74. Southwest winds around 10 mph.
.THURSDAY THROUGH FRIDAY...Mostly clear. Lows in the lower 50s.
Highs in the mid 70s.
$$