Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
036
FNUS55 KRIW 070907
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
307 AM MDT Mon Sep 7 2026
.DISCUSSION...
...Yellowstone NP and Teton dispatch areas (includes fire weather
zones 140...414...415...and 416)...
Southwest winds, with gusts of 25 to 35 mph, will be in place in
zone 140 by 0900, spreading across the rest of the dispatch area
by 1200. Conditions will remain dry through the day and tonight.
Winds will begin to subside after 1800, becoming light (10 mph or
less) for most areas by 2200. Winds in zone 140 will be slow to
decrease, becoming light by 0300. Freezing temperatures are
expected in the higher elevations and some valley locations
Tuesday morning.
...Cody dispatch area (includes fire weather zones 275...276...
282...283...285...286...287...288...and 289)...
***RED FLAG WARNING IN EFFECT FOR ZONES 275 AND 282 FROM NOON
TODAY TO 7 PM MDT THIS EVENING***
West to southwest winds will increase over zones 286/288 after
sunrise, with gusts of 40 to 55 mph expected by 1200. A similar
trend will occur across the rest of the dispatch area, with winds
increasing through the morning. Gusts of 25 to 40 mph will be in
place by 1200. A cold front will push through northern portions of
zones 275/276 between 1300 and 1500, reaching Greybull/Basin by
1800 and passing through southern portions of the basin after
2100. Winds will begin to decrease across the area after 1800,
becoming light (10 mph or less) by midnight.
...Casper dispatch area (includes fire weather zones 277...278...
279...280...281...285...289...and 300)...
Southwest winds will increase between zones 277 and 280 after
sunrise this morning. Gusts of 25 to 35 mph will be widespread
across the dispatch area by 1200. RH values will range between 18
and 25 percent, with the lower values occurring east of the
Divide. Winds will begin to decrease across the area after 1800,
becoming light (10 mph or less) by midnight.
...Thunderstorms imply strong gusty and erratic winds...
WYZ280-081115-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
307 AM MDT Mon Sep 7 2026
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....76-81.
24 hr trend......9 degrees cooler.
Min humidity........17-23 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Breezy. Southwest winds 15 to 20 mph until
1200, then around 25 mph. Gusts up to 40 mph.
Ridge top winds.....Southwest 25 to 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 25 mph until 1200, then around
35 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 8200-10200 ft
agl.
Smoke dispersal.....Good to very good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....49-54.
24 hr trend......13 degrees cooler.
Max humidity........45-51 percent.
24 hr trend......12 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds around 20 mph with gusts to around
35 mph until 2100. Downslope/downvalley 4-7 mph
after 2400.
Ridge top winds.....West around 20 mph until 2400, then around 10
mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph until 2400, then around 10
mph.
Mixing Height.......4000-6000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Very good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....75-80.
24 hr trend......2 degrees cooler.
Min humidity........9-15 percent.
24 hr trend......7 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900. Winds west
around 20 mph with gusts to around 40 mph after
1200.
Ridge top winds.....Southwest around 15 mph until 1200, then west
around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then west
around 25 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 7400-9400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Clear. Lows in the mid 40s. Northwest winds
around 10 mph.
.WEDNESDAY...Clear. Lows in the upper 40s. Highs in the upper
70s. Winds generally less than 10 mph.
.THURSDAY...Mostly clear. Lows in the mid 50s. Highs in the lower
80s. West winds around 15 mph.
.FRIDAY...Mostly clear. Lows in the upper 40s. Highs in the upper
70s. Northwest winds around 15 mph.
.SATURDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the mid 40s. Highs in the mid 70s.
.SUNDAY...Cooler. 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.
$$
WYZ283-081115-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
307 AM MDT Mon Sep 7 2026
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....71-76.
24 hr trend......8 degrees cooler.
Min humidity........17-23 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Southwest winds around 10 mph until 0900, then
west around 20 mph. Gusts up to 35 mph.
Ridge top winds.....Southwest 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph until 1200, then west
around 30 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 7600-9600 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....42-47.
24 hr trend......12 degrees cooler.
Max humidity........44-50 percent.
24 hr trend......19 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds 10 to 15 mph with gusts to around 30
mph until 0300, then downslope/downvalley 4-7
mph.
Ridge top winds.....West around 20 mph until 2400, then around 10
mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......3200-5200 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....71-76.
24 hr trend......Unchanged.
Min humidity........14-20 percent.
24 hr trend......4 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
10 to 15 mph with gusts to around 30 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph until 1200, then around 20
mph.
Mixing Height.......1200-3200 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Clear. Lows in the mid 40s. Northwest winds
around 10 mph.
.WEDNESDAY THROUGH FRIDAY...Mostly clear. Lows 49 to 54. Highs
77 to 82. West winds 10 to 15 mph.
.SATURDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the mid 40s. Highs in the mid 70s.
.SUNDAY...Cooler. Partly cloudy. Slight chance of showers in the
morning, then slight chance of showers and thunderstorms in the
afternoon. Highs in the mid 60s.
$$
WYZ285-081115-
South Bighorn Mountains-
307 AM MDT Mon Sep 7 2026
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....69-74.
24 hr trend......9 degrees cooler.
Min humidity........18-24 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Breezy. Southwest winds 15 to 20 mph until
1200, then west 20 to 25 mph. Gusts up to 40
mph.
Ridge top winds.....West 25 to 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 25 to 30 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 7400-9400 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....45-50.
24 hr trend......11 degrees cooler.
Max humidity........38-44 percent.
24 hr trend......21 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds around 20 mph with gusts to around
35 mph until 2100. Downslope/downvalley 4-7 mph
after 0300.
Ridge top winds.....West around 20 mph until 2400, then northwest
around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph until 2400, then northwest
around 10 mph.
Mixing Height.......3400-5400 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....66-71.
24 hr trend......3 degrees cooler.
Min humidity........12-18 percent.
24 hr trend......6 percent drier.
20-foot winds.......Southwest winds 10 to 15 mph until 1500, then
west around 20 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 west
around 25 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 6400-8400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Clear. Lows in the mid 40s. Northwest winds
around 10 mph.
.WEDNESDAY...Clear. Lows in the upper 40s. Highs in the upper
60s. West winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the lower 50s. Highs in the mid
70s. West winds around 15 mph.
.FRIDAY...Mostly clear. Lows in the mid 40s. Highs in the lower
70s. West winds around 15 mph.
.SATURDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the lower 40s. Highs in the upper 60s.
.SUNDAY...Cooler. Partly cloudy. Chance of showers and snow
showers in the morning, then chance of showers, snow showers and
slight chance of thunderstorms in the afternoon. Highs in the mid
50s.
$$
WYZ281-081115-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
307 AM MDT Mon Sep 7 2026
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....76-81.
24 hr trend......9 degrees cooler.
Min humidity........18-24 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Southwest winds 15 to 20 mph with gusts to
around 35 mph.
Ridge top winds.....Southwest 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 20 to 25 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 8800-10800 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....46-51.
24 hr trend......15 degrees cooler.
Max humidity........56-62 percent.
24 hr trend......Unchanged.
Humidity recovery...Moderate.
20-foot winds.......Northwest winds 10 to 15 mph with gusts to
around 25 mph until 2400, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......4000-6000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....70-75.
24 hr trend......6 degrees cooler.
Min humidity........14-20 percent.
24 hr trend......4 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph with gusts to around 30
mph until 1500, then northwest with gusts to
around 30 mph.
Ridge top winds.....South around 10 mph until 1200, then west
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then west
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......
.TUESDAY NIGHT...Mostly clear. Lows in the upper 40s. Northwest
winds around 10 mph.
.WEDNESDAY...Clear. Lows in the upper 40s. Highs in the upper
70s. Winds generally less than 10 mph.
.THURSDAY...Mostly clear. Lows in the mid 50s. Highs in the mid
80s. West winds around 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the upper 70s.
North winds around 10 mph.
.SATURDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the mid 40s. Highs in the lower 70s.
.SUNDAY...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.
$$
WYZ282-081115-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
307 AM MDT Mon Sep 7 2026
...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 7 PM MDT THIS
EVENING...
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Slight chance of showers early in the morning.
Chance of showers 20 percent.
Chance of thunder...0 percent.
Max temperature.....72-77.
24 hr trend......9 degrees cooler.
Min humidity........14-20 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Breezy. Upslope/upvalley 5-9 mph until 0900,
then southwest 15 to 20 mph until 1500, then
west around 25 mph. Gusts up to 30 mph.
Ridge top winds.....South around 15 mph until 1200, then west
around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then west
around 25 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 8600-10600 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....43-48.
24 hr trend......13 degrees cooler.
Max humidity........42-48 percent.
24 hr trend......22 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds 10 to 15 mph with gusts to around 30
mph until 2400, then downslope/downvalley 4-7
mph.
Ridge top winds.....West around 15 mph until 2400, then south.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......3400-5400 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....69-74.
24 hr trend......4 degrees cooler.
Min humidity........10-16 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
around 10 mph with gusts to around 25 mph until
1500, then northwest with gusts to around 25
mph.
Ridge top winds.....South around 10 mph until 1200, then northwest.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Clear. Lows in the upper 40s. Northwest winds
around 10 mph.
.WEDNESDAY...Clear. Lows in the lower 50s. Highs in the upper
70s. Winds generally less than 10 mph.
.THURSDAY THROUGH FRIDAY...Mostly clear. Lows 50 to 55. Highs
79 to 84. Northwest winds around 10 mph.
.SATURDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the mid 40s. Highs in the lower 70s.
.SUNDAY...Cooler. Partly cloudy. Chance of showers in the
morning, then slight chance of showers and thunderstorms in the
afternoon. Highs in the lower 60s.
$$
WYZ275-081115-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
307 AM MDT Mon Sep 7 2026
...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 7 PM MDT THIS
EVENING...
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Slight chance of showers early in the morning.
Chance of showers 20 percent.
Chance of thunder...0 percent.
Max temperature.....68-73.
24 hr trend......8 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 around 10 mph until 1200, then west
around 20 mph. Gusts up to 30 mph.
Ridge top winds.....South around 15 mph until 1200, then west
around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph until 1200, then west
around 25 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 7800-9800 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....42-47.
24 hr trend......11 degrees cooler.
Max humidity........49-55 percent.
24 hr trend......24 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Northwest winds 10 to 15 mph until 2400, then
downslope/downvalley 4-7 mph. Gusts up to 25
mph.
Ridge top winds.....West around 20 mph until 2400, then northwest
around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph until 2400, then northwest
around 10 mph.
Mixing Height.......3400-5400 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....65-70.
24 hr trend......5 degrees cooler.
Min humidity........12-18 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northwest 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 10 to 15 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Clear. Lows in the upper 40s. Northwest winds
around 10 mph.
.WEDNESDAY...Clear. Lows around 50. Highs in the upper 70s. Winds
generally less than 10 mph.
.THURSDAY...Mostly clear. Lows in the mid 50s. Highs in the lower
80s. Southwest winds around 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the upper 70s.
Northwest winds around 10 mph.
.SATURDAY...Partly cloudy with chance of showers and slight
chance of thunderstorms. Lows in the lower 40s. Highs around 70.
.SUNDAY...Partly cloudy. Chance of showers in the morning, then
slight chance of showers in the afternoon. Highs in the lower
60s.
$$
WYZ276-081115-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
307 AM MDT Mon Sep 7 2026
.TODAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....68-73.
24 hr trend......10 degrees cooler.
Min humidity........16-22 percent.
24 hr trend......6 percent drier.
20-foot winds.......Breezy. Southwest winds 10 to 15 mph until
1200, then west 20 to 25 mph. Gusts up to 40
mph.
Ridge top winds.....Southwest around 15 mph until 1200, then west
around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph until 1200, then west
around 30 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 7400-8800 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....44-49.
24 hr trend......10 degrees cooler.
Max humidity........46-52 percent.
24 hr trend......22 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds 10 to 15 mph with gusts to around 30
mph until 2400, then downslope/downvalley 4-7
mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......3000-5000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....68-73.
24 hr trend......1 degree cooler.
Min humidity........17-23 percent.
24 hr trend......1 percent drier.
20-foot winds.......Southwest winds around 10 mph with higher gusts
until 0900, then upslope/upvalley 5-9 mph until
1200, then west 10 to 15 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then west
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then west
around 25 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 7600-9600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly clear. Lows in the mid 40s. West winds
around 10 mph.
.WEDNESDAY...Clear. Lows in the lower 50s. Highs in the mid 70s.
Southwest winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the mid 50s. Highs around 80.
West winds around 15 mph.
.FRIDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
Northwest winds around 10 mph.
.SATURDAY...Partly cloudy with chance of showers and slight
chance of thunderstorms. Lows in the lower 40s. Highs in the mid
60s.
.SUNDAY...Partly cloudy. Chance of showers and snow showers in
the morning, then chance of showers and slight chance of
thunderstorms in the afternoon. Highs in the upper 50s.
$$
WYZ287-081115-
Owl Creek Mountains-
307 AM MDT Mon Sep 7 2026
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....67-72.
24 hr trend......9 degrees cooler.
Min humidity........16-22 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Breezy. Southwest winds 10 to 15 mph until
1200, then west around 25 mph. Gusts up to 35
mph.
Ridge top winds.....Southwest around 20 mph until 1200, then west
around 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph until 1200, then around
30 mph.
Mixing Height.......2600-4600 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....44-49.
24 hr trend......10 degrees cooler.
Max humidity........32-38 percent.
24 hr trend......20 percent drier.
Humidity recovery...Poor.
20-foot winds.......West winds 10 to 15 mph with gusts to around 30
mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......2800-4800 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....67-72.
24 hr trend......Unchanged.
Min humidity........12-18 percent.
24 hr trend......3 percent drier.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 30 mph until 1500, then west around 20
mph with gusts to around 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......1600-3600 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......
.TUESDAY NIGHT...Clear. Lows in the mid 40s. Northwest winds
around 10 mph.
.WEDNESDAY THROUGH FRIDAY...Mostly clear. Lows 49 to 54. Highs
73 to 78. West winds 10 to 15 mph.
.SATURDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the lower 40s. Highs in the upper 60s.
.SUNDAY...Cooler. Partly cloudy. Chance of showers and snow
showers in the morning, then slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 50s.
$$
WYZ286-081115-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
307 AM MDT Mon Sep 7 2026
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of showers early in the morning. Slight
chance of thunderstorms early in the morning.
Slight chance of showers early in the morning.
Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....57-62.
24 hr trend......14 degrees cooler.
Min humidity........26-32 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Breezy. West winds 15 to 20 mph until 1200,
then around 25 mph. Gusts up to 45 mph.
Ridge top winds.....West 25 to 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 25 mph until 1200, then west
around 35 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 5200-6200 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....37-42.
24 hr trend......9 degrees cooler.
Max humidity........59-65 percent.
24 hr trend......22 percent drier.
Humidity recovery...Good.
20-foot winds.......West winds 15 to 20 mph until 2400, then around
10 mph. Gusts up to 40 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph.
Mixing Height.......2000-4000 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....58-63.
24 hr trend......1 degree warmer.
Min humidity........20-26 percent.
24 hr trend......5 percent drier.
20-foot winds.......West winds 15 to 20 mph with gusts to around 40
mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph until 1200, then around 30
mph.
Mixing Height.......1800-3800 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly clear. Lows in the upper 30s. West winds
around 10 mph.
.WEDNESDAY...Clear. Lows in the lower 40s. Highs in the mid 60s.
West winds around 15 mph.
.THURSDAY...Mostly clear. Lows in the mid 40s. Highs in the mid
60s. West winds around 20 mph.
.FRIDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the lower 60s.
West winds around 15 mph.
.SATURDAY...Partly cloudy with chance of showers, snow showers
and slight chance of thunderstorms. Lows in the upper 30s. Highs
in the upper 50s.
.SUNDAY...Partly cloudy. Chance of snow showers and showers in
the morning, then chance of showers, snow showers and slight
chance of thunderstorms in the afternoon. Highs around 50.
$$
WYZ140-081115-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
307 AM MDT Mon Sep 7 2026
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of showers and slight chance of
thunderstorms in the morning. Chance of
precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....55-60.
24 hr trend......17 degrees cooler.
Min humidity........32-38 percent.
24 hr trend......18 percent wetter.
20-foot winds.......Southwest winds 15 to 20 mph with gusts to
around 35 mph.
Ridge top winds.....Southwest 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph until 1200, then around
30 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 4800-6800 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.....33-38.
24 hr trend......9 degrees cooler.
Max humidity........76-82 percent.
24 hr trend......17 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds 10 to 15 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 30
mph.
Ridge top winds.....Southwest around 20 mph until 2400, then around
10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......2600-4600 ft agl until 2400, then 600-800 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....58-63.
24 hr trend......3 degrees warmer.
Min humidity........29-35 percent.
24 hr trend......8 percent drier.
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 west
around 25 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 5800-7800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly clear. Lows in the lower 30s. Winds
generally less than 10 mph.
.WEDNESDAY...Clear. Lows in the upper 30s. Highs in the lower
60s. Winds generally less than 10 mph.
.THURSDAY...Mostly clear. Lows around 40. Highs in the mid 60s.
Southwest winds around 10 mph.
.FRIDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the upper 30s. Highs around 60. Southwest
winds around 10 mph.
.SATURDAY...Partly cloudy with chance of showers, snow showers
and slight chance of thunderstorms. Lows in the mid 30s. Highs in
the upper 50s.
.SUNDAY...Partly cloudy. Chance of showers and snow showers in
the morning, then slight chance of showers, thunderstorms and
snow showers in the afternoon. Highs in the lower 50s.
$$
WYZ415-081115-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
307 AM MDT Mon Sep 7 2026
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Slight chance of showers and thunderstorms in
the morning. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....53-58.
24 hr trend......16 degrees cooler.
Min humidity........30-36 percent.
24 hr trend......12 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph until 1200, then
15 to 20 mph. Gusts up to 35 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.......1400-3400 ft agl until 1200, then 4800-6600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....32-37.
24 hr trend......9 degrees cooler.
Max humidity........69-75 percent.
24 hr trend......28 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.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......2200-4200 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....57-62.
24 hr trend......3 degrees warmer.
Min humidity........28-34 percent.
24 hr trend......7 percent drier.
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 around 10 mph until 1200, then west
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then west
around 25 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Clear. Lows in the mid 30s. Winds generally less
than 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows 37 to 42. Highs
63 to 68. Southwest winds around 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows around 40. Highs in the lower 60s. Southwest
winds around 10 mph.
.SATURDAY...Partly cloudy with slight chance of showers,
thunderstorms and snow showers. Lows in the upper 30s. Highs in
the lower 60s.
.SUNDAY...Partly cloudy. Chance of showers and snow showers in
the morning, then slight chance of showers, thunderstorms and
snow showers in the afternoon. Highs in the upper 50s.
$$
WYZ416-081115-
West Wind River Mountains/East Zone Bridger Teton NF-
307 AM MDT Mon Sep 7 2026
.TODAY...
Sky/weather.........Mostly cloudy then becoming mostly sunny.
Showers likely and slight chance of
thunderstorms in the morning. Chance of
precipitation 70 percent.
Chance of thunder...20 percent.
Max temperature.....54-59.
24 hr trend......12 degrees cooler.
Min humidity........30-36 percent.
24 hr trend......9 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 30 mph until 1200, then west around 20
mph with gusts to around 40 mph.
Ridge top winds.....Southwest 20 to 25 mph.
Chc of wetting rain.10 percent until 1200, then zero percent.
Transport winds.....Southwest around 20 mph until 1200, then west
around 30 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 4600-6400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....31-36.
24 hr trend......8 degrees cooler.
Max humidity........62-68 percent.
24 hr trend......34 percent drier.
Humidity recovery...Good.
20-foot winds.......West winds 10 to 15 mph with gusts to around 30
mph until 2400, then downslope/downvalley 4-7
mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1800-3800 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....57-62.
24 hr trend......3 degrees warmer.
Min humidity........24-30 percent.
24 hr trend......8 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900. Winds west
around 20 mph after 1500. Gusts up to 35 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 1200, then around 25
mph.
Mixing Height.......1600-3600 ft agl until 1200, then 5800-7800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Clear. Lows in the mid 30s. Winds generally less
than 10 mph.
.WEDNESDAY...Mostly clear. Lows in the upper 30s. Highs in the
lower 60s. West winds around 10 mph.
.THURSDAY...Partly cloudy. Lows in the lower 40s. Highs in the
lower 60s. West winds around 15 mph.
.FRIDAY...Mostly clear. Slight chance of showers. Lows in the
upper 30s. Highs around 60. West winds around 15 mph.
.SATURDAY...Partly cloudy with slight chance of showers,
thunderstorms and snow showers. Lows in the upper 30s. Highs
around 60.
.SUNDAY...Partly cloudy. Slight chance of showers and snow
showers in the morning, then chance of snow showers, slight
chance of showers and thunderstorms in the afternoon. Highs in
the mid 50s.
$$
WYZ288-081115-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
307 AM MDT Mon Sep 7 2026
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of showers early in the morning. Slight
chance of thunderstorms in the morning. Slight
chance of showers early in the morning. Chance
of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....60-65.
24 hr trend......10 degrees cooler.
Min humidity........25-31 percent.
24 hr trend......6 percent wetter.
20-foot winds.......Windy. Southwest winds 20 to 25 mph until 1200,
then west around 30 mph. Gusts up to 55 mph.
Ridge top winds.....Southwest around 25 mph until 1200, then west
around 35 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest around 30 mph until 1200, then around
40 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 5000-6400 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....37-42.
24 hr trend......9 degrees cooler.
Max humidity........51-57 percent.
24 hr trend......30 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds 15 to 20 mph with gusts to around 45
mph until 2400, then around 10 mph with gusts
to around 30 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......2000-4000 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....61-66.
24 hr trend......2 degrees warmer.
Min humidity........22-28 percent.
24 hr trend......6 percent drier.
20-foot winds.......West winds 10 to 15 mph until 1200, then around
20 mph. Gusts up to 40 mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph until 1200, then around 30
mph.
Mixing Height.......1800-3800 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly clear. Lows in the upper 30s. West winds
around 10 mph.
.WEDNESDAY...Mostly clear. Lows in the lower 40s. Highs in the
mid 60s. West winds around 10 mph.
.THURSDAY...Partly cloudy. Lows in the upper 40s. Highs in the
upper 60s. West winds around 20 mph.
.FRIDAY...Mostly clear. Slight chance of showers. Lows in the mid
40s. Highs in the mid 60s. West winds around 15 mph.
.SATURDAY...Partly cloudy with chance of showers, snow showers
and slight chance of thunderstorms. Lows in the lower 40s. Highs
in the lower 60s.
.SUNDAY...Partly cloudy. Chance of showers and snow showers in
the morning, then chance of showers, snow showers and slight
chance of thunderstorms in the afternoon. Highs in the mid 50s.
$$
WYZ414-081115-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
307 AM MDT Mon Sep 7 2026
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of showers in the morning. Slight chance
of thunderstorms through the day. Slight chance
of showers in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....54-59.
24 hr trend......13 degrees cooler.
Min humidity........30-36 percent.
24 hr trend......11 percent wetter.
20-foot winds.......West winds 10 to 15 mph with gusts to around 35
mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 1200, then around 25
mph.
Mixing Height.......1400-3400 ft agl until 1200, then 4800-6400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....33-38.
24 hr trend......8 degrees cooler.
Max humidity........73-79 percent.
24 hr trend......32 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West 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.....West 10 to 15 mph.
Mixing Height.......1800-3800 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Poor to fair until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....59-64.
24 hr trend......4 degrees warmer.
Min humidity........23-29 percent.
24 hr trend......8 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 15 mph with gusts to around 35 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then west
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then west
around 25 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 6400-8200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly clear. Lows in the upper 30s. Winds
generally less than 10 mph.
.WEDNESDAY...Mostly clear. Lows around 40. Highs in the upper
60s. Winds generally less than 10 mph.
.THURSDAY...Partly cloudy. Lows in the mid 40s. Highs in the
upper 60s. West winds around 10 mph.
.FRIDAY...Mostly clear. Lows in the lower 40s. Highs in the mid
60s. Southwest winds around 10 mph.
.SATURDAY THROUGH SUNDAY...Partly cloudy with slight chance of
showers, thunderstorms and snow showers. Lows around 40. Highs
60 to 65.
$$
WYZ278-081115-
Upper Green River Basin/Rock Springs BLM-
Including the cities of Big Piney, Farson, and Pinedale
307 AM MDT Mon Sep 7 2026
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of showers early in the morning. Slight
chance of thunderstorms early in the morning.
Slight chance of showers early in the morning.
Chance of precipitation 50 percent.
Chance of thunder...10 percent.
Max temperature.....61-66.
24 hr trend......9 degrees cooler.
Min humidity........24-30 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph until 1200, then
west around 20 mph. Gusts up to 35 mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 6200-8000 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....35-40.
24 hr trend......11 degrees cooler.
Max humidity........63-69 percent.
24 hr trend......23 percent drier.
Humidity recovery...Good.
20-foot winds.......West winds 10 to 15 mph with gusts to around 30
mph until 2400, then downslope/downvalley 4-7
mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......2600-4600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....64-69.
24 hr trend......3 degrees warmer.
Min humidity........18-24 percent.
24 hr trend......6 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph with gusts to around 35
mph until 1500, then west around 20 mph with
gusts to around 35 mph.
Ridge top winds.....Northwest around 10 mph until 1200, then west
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph until 1200, then west
around 25 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor until 1200, then very good to excellent.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly clear. Lows in the upper 30s. Northwest
winds around 10 mph.
.WEDNESDAY...Mostly clear. Lows in the upper 30s. Highs in the
lower 70s. Winds generally less than 10 mph.
.THURSDAY...Partly cloudy. Lows in the mid 40s. Highs in the mid
70s. West winds around 10 mph.
.FRIDAY...Mostly clear. Lows in the lower 40s. Highs in the lower
70s. West winds around 10 mph.
.SATURDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows around 40. Highs in the lower 70s.
.SUNDAY...Partly cloudy. Slight chance of showers in the morning,
then slight chance of showers and thunderstorms in the afternoon.
Highs in the mid 60s.
$$
WYZ277-081115-
Lincoln and Uinta Counties/Lower Elevations-
Including the cities of Evanston, Fort Bridger, and Kemmerer
307 AM MDT Mon Sep 7 2026
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Slight chance of showers and thunderstorms
early in the morning. Chance of precipitation
20 percent.
Chance of thunder...10 percent.
Max temperature.....63-68.
24 hr trend......8 degrees cooler.
Min humidity........25-31 percent.
24 hr trend......7 percent wetter.
20-foot winds.......West winds 15 to 20 mph with gusts to around 30
mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 5600-7400 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....36-41.
24 hr trend......9 degrees cooler.
Max humidity........67-73 percent.
24 hr trend......26 percent drier.
Humidity recovery...Good.
20-foot winds.......West winds around 15 mph with gusts to around
25 mph until 2100, then downslope/downvalley
4-7 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......2400-4400 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....66-71.
24 hr trend......4 degrees warmer.
Min humidity........17-23 percent.
24 hr trend......9 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph with gusts to around 30 mph until
1500, then around 20 mph with gusts to around
30 mph.
Ridge top winds.....Southwest around 5 mph until 1200, then west
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then west
around 25 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 6400-8400 ft
agl.
Smoke dispersal.....Poor until 1200, then very good to excellent.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly clear. Lows around 40. Winds generally
less than 10 mph.
.WEDNESDAY...Mostly clear. Lows in the lower 40s. Highs in the
mid 70s. Winds generally less than 10 mph.
.THURSDAY...Partly cloudy. Lows in the mid 40s. Highs in the mid
70s. West winds around 10 mph.
.FRIDAY...Mostly clear. Lows in the mid 40s. Highs in the mid
70s. West winds around 10 mph.
.SATURDAY...Partly cloudy. Slight chance of showers. Lows in the
lower 40s. Highs in the lower 70s.
.SUNDAY...Mostly sunny. Highs in the upper 60s.
$$
WYZ279-081115-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Including the cities of Green River, Rock Springs, and Wamsutter
307 AM MDT Mon Sep 7 2026
.TODAY...
Sky/weather.........Partly cloudy. Chance of showers early in the
morning. Slight chance of showers early in the
morning. Chance of showers 50 percent.
Chance of thunder...0 percent.
Max temperature.....66-71.
24 hr trend......7 degrees cooler.
Min humidity........27-33 percent.
24 hr trend......8 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph until 1200, then
west around 20 mph. Gusts up to 30 mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 20 to 25 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 6600-8400 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....42-47.
24 hr trend......9 degrees cooler.
Max humidity........61-67 percent.
24 hr trend......27 percent drier.
Humidity recovery...Good.
20-foot winds.......West winds 10 to 15 mph with gusts to around 25
mph until 2400, then downslope/downvalley 4-7
mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph until 2400, then around 10
mph.
Mixing Height.......2800-4800 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....70-75.
24 hr trend......2 degrees warmer.
Min humidity........25-31 percent.
24 hr trend......8 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
10 to 15 mph with gusts to around 30 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then west
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then west
around 20 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly clear. Lows in the mid 40s. Winds
generally less than 10 mph.
.WEDNESDAY...Mostly clear. Lows in the mid 40s. Highs in the mid
70s. Winds generally less than 10 mph.
.THURSDAY...Partly cloudy. Lows around 50. Highs in the upper
70s. West winds around 10 mph.
.FRIDAY...Mostly clear. Lows in the upper 40s. Highs in the mid
70s. West winds around 10 mph.
.SATURDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the mid 70s.
.SUNDAY...Partly cloudy. Slight chance of showers in the morning,
then slight chance of showers and thunderstorms in the afternoon.
Highs in the upper 60s.
$$
WYZ289-081115-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
307 AM MDT Mon Sep 7 2026
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....69-74.
24 hr trend......9 degrees cooler.
Min humidity........20-26 percent.
24 hr trend......6 percent wetter.
20-foot winds.......Breezy. Southwest winds around 15 mph until
0900, then around 25 mph. Gusts up to 40 mph.
Ridge top winds.....Southwest 25 to 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 25 mph until 1200, then around
35 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....44-49.
24 hr trend......10 degrees cooler.
Max humidity........43-49 percent.
24 hr trend......28 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds around 20 mph with gusts to around
30 mph until 2100. Downslope/downvalley 4-7 mph
after 2400.
Ridge top winds.....West around 20 mph until 2400, then around 10
mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph until 2400, then around 10
mph.
Mixing Height.......3000-5000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....69-74.
24 hr trend......Unchanged.
Min humidity........13-19 percent.
24 hr trend......8 percent drier.
20-foot winds.......Breezy. Upslope/upvalley 5-9 mph until 0900.
Winds west around 25 mph with gusts to around
45 mph after 1500.
Ridge top winds.....Southwest around 15 mph until 1200, then west
around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then west
around 30 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly clear. Lows in the mid 40s. Northwest
winds around 10 mph.
.WEDNESDAY THROUGH FRIDAY...Mostly clear. Lows 47 to 52. Highs
73 to 78. West winds 10 to 15 mph.
.SATURDAY...Partly cloudy with chance of showers and slight
chance of thunderstorms. Lows in the lower 40s. Highs in the mid
70s.
.SUNDAY...Partly cloudy. Slight chance of showers in the morning,
then slight chance of showers and thunderstorms in the afternoon.
Highs in the mid 60s.
$$
WYZ300-081115-
Casper Mountain-
307 AM MDT Mon Sep 7 2026
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Slight chance of showers early in the morning.
Chance of showers 20 percent.
Chance of thunder...0 percent.
Max temperature.....71-76.
24 hr trend......9 degrees cooler.
Min humidity........24-30 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Breezy. Southwest winds 20 to 25 mph with gusts
to around 40 mph.
Ridge top winds.....Southwest 25 to 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 25 mph until 1200, then around
35 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....49-54.
24 hr trend......9 degrees cooler.
Max humidity........39-45 percent.
24 hr trend......21 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds 10 to 15 mph with gusts to around 30
mph until 2400, then downslope/downvalley 4-7
mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph until 2400, then around 10
mph.
Mixing Height.......3400-5400 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....70-75.
24 hr trend......1 degree cooler.
Min humidity........14-20 percent.
24 hr trend......11 percent drier.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 30 mph until 1200, then west around 20
mph with gusts to around 40 mph.
Ridge top winds.....Southwest around 15 mph until 1200, then west
around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph until 1200, then west
around 30 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly clear. Lows in the mid 40s. Winds
generally less than 10 mph.
.WEDNESDAY THROUGH FRIDAY...Mostly clear. Lows 48 to 53. Highs
70 to 75. Southwest winds 10 to 15 mph.
.SATURDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the mid 40s. Highs in the lower 70s.
.SUNDAY...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.
$$