Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
372
FNUS55 KRIW 072040
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
240 PM MDT Mon Sep 7 2026
.DISCUSSION...
...Yellowstone NP and Teton dispatch areas (includes fire weather
zones 140...414...415...and 416)...
Elevated fire weather conditions will continue through sunset
given wind gusts of 25 to 35 mph and humidity below 30 percent.
Lighter winds are expected overnight. Tuesday will be slightly
warmer and drier with westerly wind gusts of 20 to 30 mph through
the afternoon. Warm, dry, and breezy conditions will be the trend
through the week, leading to elevated fire weather conditions each
afternoon.
...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 UNTIL 7 PM
MDT THIS EVENING***
Elevated to critical fire weather conditions will continue through
sunset given wind gusts of 30 to to 40 mph and humidity below 20
percent. Lighter winds are expected overnight. Similar conditions
are expected on Tuesday, with the strongest winds across the
mountains and in the Wind River Basin. Warm, dry, and breezy
conditions will be the trend through the week, leading to near-
critical fire weather conditions each afternoon.
...Casper dispatch area (includes fire weather zones 277...278...
279...280...281...285...289...and 300)...
Elevated to critical fire weather conditions will continue through
sunset given wind gusts of 30 to to 40 mph and humidity below 20
percent. Lighter winds are expected overnight. Similar conditions
are expected on Tuesday, with the strongest winds across zones
280, 289, and 300. Warm, dry, and breezy conditions will be the
trend through the week, leading to near- critical fire weather
conditions each afternoon.
...Thunderstorms imply strong gusty and erratic winds...
WYZ280-082245-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
240 PM MDT Mon Sep 7 2026
.THIS AFTERNOON...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....76-81.
24 hr trend......8 degrees cooler.
Min humidity........17-23 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Windy. Southwest winds around 30 mph with gusts
to around 45 mph.
Ridge top winds.....Southwest around 35 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 35 mph.
Mixing Height.......9600-10600 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....49-54.
24 hr trend......13 degrees cooler.
Max humidity........35-41 percent.
24 hr trend......14 percent drier.
Humidity recovery...Poor.
20-foot winds.......West winds 15 to 20 mph with gusts to around 40
mph until 2400. Downslope/downvalley 4-7 mph
after 0300.
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.....76-81.
24 hr trend......1 degree cooler.
Min humidity........10-16 percent.
24 hr trend......6 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900. Winds west
around 20 mph with gusts to around 35 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.....West around 15 mph until 1200, then around 25
mph.
Mixing Height.......1200-3200 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....44-49.
24 hr trend......4 degrees cooler.
Max humidity........56-62 percent.
24 hr trend......24 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......Northwest winds around 15 mph with gusts to
around 35 mph until 2400, then north and gusty
until 0300, then downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest around 20 mph until 2400, then north
around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 20 mph until 2400, then
northeast around 10 mph.
Mixing Height.......3800-5800 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....75-80.
24 hr trend......1 degree cooler.
Min humidity........7-13 percent.
24 hr trend......3 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
10 to 15 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 west
around 20 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Clear. Lows in the upper 40s. Winds generally
less than 10 mph.
.THURSDAY...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 around 80.
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.
Southwest winds around 15 mph.
.SUNDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the lower 40s. Highs in the lower 70s.
.MONDAY...Partly cloudy. Highs in the mid 60s.
$$
WYZ283-082245-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
240 PM MDT Mon Sep 7 2026
.THIS AFTERNOON...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....70-75.
24 hr trend......7 degrees cooler.
Min humidity........17-23 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Breezy. West winds around 25 mph with gusts to
around 40 mph.
Ridge top winds.....West around 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 30 mph.
Mixing Height.......8000-9800 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....42-47.
24 hr trend......12 degrees cooler.
Max humidity........36-42 percent.
24 hr trend......21 percent drier.
Humidity recovery...Poor.
20-foot winds.......West winds 10 to 15 mph. Gusts up to 35 mph
until 2400, then 25 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......3400-5400 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.....72-77.
24 hr trend......1 degree warmer.
Min humidity........15-21 percent.
24 hr trend......3 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.......1000-3000 ft agl until 1200, then 6400-8400 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....41-46.
24 hr trend......1 degree cooler.
Max humidity........43-49 percent.
24 hr trend......10 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......Northwest winds 15 to 20 mph with gusts to
around 30 mph until 2400, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest around 20 mph until 2400, then west
around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 20 mph until 2400, then around
10 mph.
Mixing Height.......4000-6000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....74-79.
24 hr trend......Unchanged.
Min humidity........12-18 percent.
24 hr trend......3 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then west
around 10 mph with gusts to around 25 mph.
Ridge top winds.....Southwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......800-2800 ft agl until 1200, then 4600-6600 ft
agl.
Smoke dispersal.....Poor until 1200, then fair to good.
.Forecast days 3 through 7......
.WEDNESDAY THROUGH THURSDAY...Clear. Lows 49 to 54. Highs in the
lower 80s. West winds 10 to 15 mph.
.FRIDAY...Mostly clear. Lows in the upper 40s. Highs around 80.
West 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.
Southwest winds around 10 mph.
.SUNDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs around 70.
.MONDAY...Mostly sunny with slight chance of showers. Highs in
the mid 60s.
$$
WYZ285-082245-
South Bighorn Mountains-
240 PM MDT Mon Sep 7 2026
.THIS AFTERNOON...
Sky/weather.........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. West winds around 25 mph with gusts to
around 45 mph.
Ridge top winds.....West around 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 30 mph.
Mixing Height.......8600-9800 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....44-49.
24 hr trend......10 degrees cooler.
Max humidity........29-35 percent.
24 hr trend......28 percent drier.
Humidity recovery...Poor.
20-foot winds.......West winds 15 to 20 mph with gusts to around 40
mph until 2400, then northwest around 10 mph
with gusts to around 25 mph.
Ridge top winds.....Northwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 15 to 20 mph.
Mixing Height.......3600-5600 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....67-72.
24 hr trend......2 degrees cooler.
Min humidity........12-18 percent.
24 hr trend......6 percent drier.
20-foot winds.......West winds 10 to 15 mph. Gusts up to 20 mph
until 1200, then 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.......1200-3200 ft agl until 1200, then 5800-7800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....42-47.
24 hr trend......3 degrees cooler.
Max humidity........46-52 percent.
24 hr trend......16 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......Northwest winds 10 to 15 mph with gusts to
around 30 mph until 2400, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest around 20 mph until 2400, then west
around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 20 mph until 2400, then west
around 10 mph.
Mixing Height.......3600-5600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....67-72.
24 hr trend......Unchanged.
Min humidity........13-19 percent.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then west
10 to 15 mph. Gusts up to 25 mph.
Ridge top winds.....West 10 to 15 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 4800-6800 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.WEDNESDAY THROUGH THURSDAY...Clear. Lows 49 to 54. Highs in the
mid 70s. West winds 10 to 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 mid 40s. Highs in the upper 60s. West
winds around 10 mph.
.SUNDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the lower 40s. Highs in the lower 60s.
.MONDAY...Partly cloudy. Slight chance of showers in the morning,
then slight chance of showers and thunderstorms in the afternoon.
Highs in the upper 50s.
$$
WYZ281-082245-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
240 PM MDT Mon Sep 7 2026
.THIS AFTERNOON...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....76-81.
24 hr trend......8 degrees cooler.
Min humidity........18-24 percent.
24 hr trend......7 percent wetter.
20-foot winds.......West winds around 20 mph with gusts to around
35 mph.
Ridge top winds.....West around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 30 mph.
Mixing Height.......10000-11200 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....47-52.
24 hr trend......15 degrees cooler.
Max humidity........44-50 percent.
24 hr trend......2 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Northwest winds 10 to 15 mph with gusts to
around 30 mph until 0300, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph until 2400, then northwest
around 10 mph.
Mixing Height.......4200-6200 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........16-22 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
10 to 15 mph with gusts to around 25 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then
northwest.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 6000-8000 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....44-49.
24 hr trend......3 degrees cooler.
Max humidity........59-65 percent.
24 hr trend......19 percent wetter.
Humidity recovery...Good.
20-foot winds.......North winds 10 to 15 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 30
mph.
Ridge top winds.....North around 20 mph until 2400, then northwest
around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 20 mph until 2400, then northwest
around 10 mph.
Mixing Height.......3000-5000 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....71-76.
24 hr trend......1 degree warmer.
Min humidity........16-22 percent.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
around 10 mph until 1500, then northwest. 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.......1200-3200 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.WEDNESDAY THROUGH THURSDAY...Warmer, clear. Lows 49 to 54. Highs
in the mid 80s. West winds around 10 mph.
.FRIDAY...Mostly clear. 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.
Northwest winds around 10 mph.
.SUNDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the mid 40s. Highs in the mid 60s.
.MONDAY...Partly cloudy with slight chance of showers. Highs in
the mid 60s.
$$
WYZ282-082245-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
240 PM MDT Mon Sep 7 2026
...RED FLAG WARNING IN EFFECT UNTIL 7 PM MDT THIS EVENING...
.THIS AFTERNOON...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....72-77.
24 hr trend......8 degrees cooler.
Min humidity........14-20 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Breezy. West winds around 25 mph with gusts to
around 40 mph.
Ridge top winds.....West around 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 30 mph.
Mixing Height.......9400-10800 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....43-48.
24 hr trend......13 degrees cooler.
Max humidity........33-39 percent.
24 hr trend......30 percent drier.
Humidity recovery...Poor.
20-foot winds.......West winds around 20 mph with gusts to around
35 mph until 2100, then around 10 mph with
gusts to around 35 mph until 2400, then
downslope/downvalley 4-7 mph.
Ridge top winds.....West around 20 mph until 2400, then southeast
around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph until 2400, then east around
10 mph.
Mixing Height.......3600-5600 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......3 degrees cooler.
Min humidity........11-17 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....Southwest around 10 mph until 1200, then
northwest.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then west.
Mixing Height.......1000-3000 ft agl until 1200, then 5800-7800 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....41-46.
24 hr trend......1 degree cooler.
Max humidity........49-55 percent.
24 hr trend......14 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......Northwest winds 10 to 15 mph until 2400, then
west until 0300, then downslope/downvalley 4-7
mph. Gusts up to 25 mph.
Ridge top winds.....Northwest around 20 mph until 2400, then
southwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 20 mph until 2400, then west
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.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....70-75.
24 hr trend......Unchanged.
Min humidity........12-18 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northeast around 10 mph with higher gusts.
Ridge top winds.....South around 10 mph until 1200, then east.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then west.
Mixing Height.......1000-3000 ft agl until 1200, then 4400-6400 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.WEDNESDAY THROUGH THURSDAY...Warmer, clear. Lows 51 to 56. Highs
in the mid 80s. West winds around 10 mph.
.FRIDAY...Mostly clear. Lows in the upper 40s. Highs around 80.
Northwest winds around 10 mph.
.SATURDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the mid 70s.
Northwest winds around 10 mph.
.SUNDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the upper 60s.
.MONDAY...Partly cloudy with slight chance of showers. Highs in
the mid 60s.
$$
WYZ275-082245-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
240 PM MDT Mon Sep 7 2026
...RED FLAG WARNING IN EFFECT UNTIL 7 PM MDT THIS EVENING...
.THIS AFTERNOON...
Sky/weather.........Mostly sunny.
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.......Breezy. West winds around 25 mph with gusts to
around 40 mph.
Ridge top winds.....West around 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 30 mph.
Mixing Height.......8800-10200 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....43-48.
24 hr trend......11 degrees cooler.
Max humidity........38-44 percent.
24 hr trend......35 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds 15 to 20 mph with gusts to around 35
mph until 2400, then northwest around 10 mph
with gusts to around 15 mph.
Ridge top winds.....Northwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 15 to 20 mph.
Mixing Height.......3400-5400 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.....65-70.
24 hr trend......4 degrees cooler.
Min humidity........13-19 percent.
24 hr trend......1 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.....Southwest around 10 mph until 1200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 5800-7800 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear. Slight chance of showers early in
the evening. Chance of showers 20 percent.
Chance of thunder...0 percent.
Min temperature.....41-46.
24 hr trend......1 degree cooler.
Max humidity........52-58 percent.
24 hr trend......15 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......North winds 10 to 15 mph with gusts to around
30 mph until 0300, then downslope/downvalley
4-7 mph.
Ridge top winds.....North around 20 mph until 2400, then northwest
around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 20 mph until 2400, then northwest
around 10 mph.
Mixing Height.......2600-4600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....67-72.
24 hr trend......2 degrees warmer.
Min humidity........14-20 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southeast around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southeast 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......800-2800 ft agl until 1200, then 4000-6000 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.WEDNESDAY THROUGH THURSDAY...Warmer, clear. Lows 50 to 55. Highs
in the lower 80s. Southwest winds around 10 mph.
.FRIDAY...Mostly clear. 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 mid 40s. Highs in the lower
70s. Northwest winds around 10 mph.
.SUNDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the lower 40s. Highs in the mid 60s.
.MONDAY...Partly cloudy with slight chance of showers. Highs in
the mid 60s.
$$
WYZ276-082245-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
240 PM MDT Mon Sep 7 2026
.THIS AFTERNOON...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....67-72.
24 hr trend......8 degrees cooler.
Min humidity........16-22 percent.
24 hr trend......6 percent drier.
20-foot winds.......West winds around 20 mph with gusts to around
40 mph.
Ridge top winds.....West around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 30 mph.
Mixing Height.......7600-8800 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....44-49.
24 hr trend......10 degrees cooler.
Max humidity........35-41 percent.
24 hr trend......33 percent drier.
Humidity recovery...Poor.
20-foot winds.......West winds 10 to 15 mph. Gusts up to 35 mph
until 2400, then 25 mph.
Ridge top winds.....West 15 to 20 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. Slight chance of showers late in
the afternoon. Chance of showers 20 percent.
Chance of thunder...0 percent.
Max temperature.....68-73.
24 hr trend......Unchanged.
Min humidity........17-23 percent.
24 hr trend......1 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.......1800-3800 ft agl until 1200, then 7600-9600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear. Slight chance of showers early in
the evening. Chance of showers 20 percent.
Chance of thunder...0 percent.
Min temperature.....43-48.
24 hr trend......1 degree cooler.
Max humidity........41-47 percent.
24 hr trend......7 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......Northwest winds 10 to 15 mph with gusts to
around 30 mph until 2400, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest around 20 mph until 2400, then west
around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 20 mph until 2400, then
southwest around 10 mph.
Mixing Height.......3200-5200 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....73-78.
24 hr trend......4 degrees warmer.
Min humidity........14-20 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900. Winds west
around 15 mph with gusts to around 25 mph after
1500.
Ridge top winds.....Southwest 10 to 15 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 5800-7800 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Clear. Lows in the lower 50s. West winds
around 15 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 mid
70s. Northwest winds around 10 mph.
.SATURDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the lower 40s. Highs in the upper 60s.
Northwest winds around 10 mph.
.SUNDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the lower 40s. Highs in the upper 50s.
.MONDAY...Partly cloudy. Slight chance of showers in the morning,
then slight chance of showers and thunderstorms in the afternoon.
Highs in the lower 60s.
$$
WYZ287-082245-
Owl Creek Mountains-
240 PM MDT Mon Sep 7 2026
.THIS AFTERNOON...
Sky/weather.........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. West winds around 25 mph with gusts to
around 40 mph.
Ridge top winds.....West around 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 30 mph.
Mixing Height.......7200-9000 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....44-49.
24 hr trend......10 degrees cooler.
Max humidity........27-33 percent.
24 hr trend......27 percent drier.
Humidity recovery...Poor.
20-foot winds.......West winds 15 to 20 mph with gusts to around 35
mph until 0300, then around 10 mph with gusts
to around 25 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......1 degree warmer.
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.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....42-47.
24 hr trend......2 degrees cooler.
Max humidity........37-43 percent.
24 hr trend......10 percent wetter.
Humidity recovery...Poor.
20-foot winds.......Northwest winds 10 to 15 mph with gusts to
around 30 mph until 0300, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest around 20 mph until 2400, then west
around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 20 mph until 2400, then around
10 mph.
Mixing Height.......3400-5400 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....69-74.
24 hr trend......1 degree warmer.
Min humidity........11-17 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
around 10 mph with gusts to around 25 mph until
1500, then west 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 5000-7000 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Clear. Lows around 50. West winds around
10 mph.
.THURSDAY...Mostly clear. Lows in the mid 50s. Highs in the upper
70s. West winds around 15 mph.
.FRIDAY...Mostly clear. Lows in the upper 40s. Highs in the mid
70s. West winds around 15 mph.
.SATURDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the mid 40s. Highs in the upper 60s. West
winds around 10 mph.
.SUNDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the lower 40s. Highs in the lower 60s.
.MONDAY...Partly cloudy. Slight chance of showers in the morning,
then slight chance of showers and thunderstorms in the afternoon.
Highs in the upper 50s.
$$
WYZ286-082245-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
240 PM MDT Mon Sep 7 2026
.THIS AFTERNOON...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....56-61.
24 hr trend......14 degrees cooler.
Min humidity........26-32 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Breezy. West winds around 25 mph with gusts to
around 45 mph.
Ridge top winds.....West around 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 35 mph.
Mixing Height.......5600-6400 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....37-42.
24 hr trend......7 degrees cooler.
Max humidity........52-58 percent.
24 hr trend......39 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Breezy. West winds 20 to 25 mph until 0300,
then around 15 mph. Gusts up to 40 mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph.
Mixing Height.......2200-4200 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny. Slight chance of showers late in
the afternoon. Chance of showers 20 percent.
Chance of thunder...0 percent.
Max temperature.....58-63.
24 hr trend......3 degrees warmer.
Min humidity........21-27 percent.
24 hr trend......5 percent drier.
20-foot winds.......West winds 10 to 15 mph with gusts to around 30
mph until 1200, then around 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 6200-8200 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear. Slight chance of showers early in
the evening. Chance of showers 20 percent.
Chance of thunder...0 percent.
Min temperature.....36-41.
24 hr trend......Unchanged.
Max humidity........54-60 percent.
24 hr trend......3 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......West winds around 20 mph with gusts to around
35 mph until 2100, then around 10 mph with
gusts to around 35 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......2600-4600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....64-69.
24 hr trend......5 degrees warmer.
Min humidity........16-22 percent.
24 hr trend......5 percent drier.
20-foot winds.......West winds 10 to 15 mph until 1500, then around
20 mph. Gusts up to 30 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.......1200-3200 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Clear. Lows in the lower 40s. 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. Chance of showers, snow showers and
slight chance of thunderstorms. Lows in the upper 30s. Highs
around 60. West winds around 10 mph.
.SUNDAY...Partly cloudy with chance of showers, snow showers and
slight chance of thunderstorms. Lows in the mid 30s. Highs in the
mid 50s.
.MONDAY...Partly cloudy. Slight chance of showers and snow
showers in the morning, then slight chance of showers,
thunderstorms and snow showers in the afternoon. Highs in the mid
50s.
$$
WYZ140-082245-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
240 PM MDT Mon Sep 7 2026
.THIS AFTERNOON...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....54-59.
24 hr trend......18 degrees cooler.
Min humidity........32-38 percent.
24 hr trend......18 percent wetter.
20-foot winds.......Southwest winds around 20 mph with gusts to
around 35 mph.
Ridge top winds.....Southwest around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 30 mph.
Mixing Height.......6400-7200 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....32-37.
24 hr trend......9 degrees cooler.
Max humidity........68-74 percent.
24 hr trend......25 percent drier.
Humidity recovery...Good.
20-foot winds.......Southwest winds 15 to 20 mph with gusts to
around 35 mph until 2400. Downslope/downvalley
4-7 mph after 0300.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......2600-4600 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good until 2400, then poor.
.TUESDAY...
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.....58-63.
24 hr trend......4 degrees warmer.
Min humidity........29-35 percent.
24 hr trend......7 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then west
10 to 15 mph. Gusts up to 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.......1600-3600 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear. Slight chance of showers early in
the evening. Chance of showers 20 percent.
Chance of thunder...0 percent.
Min temperature.....32-37.
24 hr trend......1 degree warmer.
Max humidity........67-73 percent.
24 hr trend......Unchanged.
Humidity recovery...Good.
20-foot winds.......West winds around 10 mph with gusts to around
30 mph until 2100, then downslope/downvalley
4-7 mph.
Ridge top winds.....West around 10 mph until 2400, then south.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 2400, then south.
Mixing Height.......2800-4800 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....64-69.
24 hr trend......6 degrees warmer.
Min humidity........22-28 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 30
mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then west
around 20 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 4600-6600 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.WEDNESDAY THROUGH THURSDAY...Clear. Lows 37 to 42. 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 in the lower 60s.
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 lower 60s. Southwest winds around 10 mph.
.SUNDAY...Partly cloudy with chance of showers, snow showers and
slight chance of thunderstorms. Lows in the lower 30s. Highs in
the lower 50s.
.MONDAY...Partly cloudy. Slight chance of showers and snow
showers in the morning, then slight chance of showers,
thunderstorms and snow showers in the afternoon. Highs in the mid
50s.
$$
WYZ415-082245-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
240 PM MDT Mon Sep 7 2026
.THIS AFTERNOON...
Sky/weather.........Sunny.
Chance of thunder...0 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 around 15 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 25 mph.
Mixing Height.......5800-6600 ft agl.
Smoke dispersal.....Very good.
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....31-36.
24 hr trend......9 degrees cooler.
Max humidity........65-71 percent.
24 hr trend......38 percent drier.
Humidity recovery...Good.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 30 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.......2200-4200 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.TUESDAY...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....58-63.
24 hr trend......4 degrees warmer.
Min humidity........29-35 percent.
24 hr trend......6 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then west
10 to 15 mph. Gusts up to 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 5600-7600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....32-37.
24 hr trend......1 degree warmer.
Max humidity........62-68 percent.
24 hr trend......3 percent drier.
Humidity recovery...Good.
20-foot winds.......West winds around 10 mph with gusts to around
30 mph until 2100, then downslope/downvalley
4-7 mph.
Ridge top winds.....West around 10 mph until 2400, then southeast.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph until 2400, then south.
Mixing Height.......2200-4200 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....63-68.
24 hr trend......5 degrees warmer.
Min humidity........21-27 percent.
24 hr trend......7 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph with gusts to around 25 mph.
Ridge top winds.....South around 10 mph until 1200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then west
around 20 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 4600-6600 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Clear. Lows in the upper 30s. Winds generally
less than 10 mph.
.THURSDAY THROUGH FRIDAY...Mostly clear. Lows 39 to 44. Highs
63 to 68. Southwest winds around 10 mph.
.SATURDAY...Partly cloudy with chance of showers, snow showers
and slight chance of thunderstorms. Lows in the upper 30s. Highs
in the mid 60s. Southwest winds around 10 mph.
.SUNDAY...Partly cloudy with chance of showers, snow showers and
slight chance of thunderstorms. Lows in the mid 30s. Highs in the
mid 50s.
.MONDAY...Partly cloudy. Slight 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.
$$
WYZ416-082245-
West Wind River Mountains/East Zone Bridger Teton NF-
240 PM MDT Mon Sep 7 2026
.THIS AFTERNOON...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....53-58.
24 hr trend......12 degrees cooler.
Min humidity........30-36 percent.
24 hr trend......9 percent wetter.
20-foot winds.......Breezy. Southwest winds around 25 mph with
gusts to around 40 mph.
Ridge top winds.....Southwest around 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 30 mph.
Mixing Height.......5400-6600 ft agl.
Smoke dispersal.....Very good to excellent.
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....32-37.
24 hr trend......8 degrees cooler.
Max humidity........49-55 percent.
24 hr trend......40 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds around 20 mph with gusts to around
35 mph until 2100, then northwest around 10 mph
with gusts to around 35 mph until 0300, then
downslope/downvalley 4-7 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 around 10
mph.
Mixing Height.......2000-4000 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.....58-63.
24 hr trend......4 degrees warmer.
Min humidity........25-31 percent.
24 hr trend......6 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 around 15 mph until 1200, then around 25
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 5600-7600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....32-37.
24 hr trend......Unchanged.
Max humidity........45-51 percent.
24 hr trend......4 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds around 15 mph with gusts to around
35 mph until 2100, then downslope/downvalley
4-7 mph.
Ridge top winds.....Northwest around 15 mph until 2400, then
northeast.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 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.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....61-66.
24 hr trend......3 degrees warmer.
Min humidity........16-22 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 30 mph.
Ridge top winds.....West around 10 mph until 1200, then around 20
mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph until 1200, then around 20
mph.
Mixing Height.......1000-3000 ft agl until 1200, then 4400-6400 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Clear. Lows in the upper 30s. Winds generally
less than 10 mph.
.THURSDAY...Mostly clear. Lows in the lower 40s. Highs in the
lower 60s. West winds around 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 30s. Highs in the lower 60s.
West winds around 10 mph.
.SATURDAY...Partly cloudy. Chance of showers, snow showers and
slight chance of thunderstorms. Lows in the upper 30s. Highs in
the lower 60s. Southwest winds around 10 mph.
.SUNDAY...Partly cloudy with chance of snow showers, slight
chance of showers and thunderstorms. Lows in the mid 30s. Highs
in the mid 50s.
.MONDAY...Partly cloudy. Slight chance of showers and snow
showers in the morning, then slight chance of showers,
thunderstorms and snow showers in the afternoon. Highs in the mid
50s.
$$
WYZ288-082245-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
240 PM MDT Mon Sep 7 2026
.THIS AFTERNOON...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....59-64.
24 hr trend......10 degrees cooler.
Min humidity........25-31 percent.
24 hr trend......6 percent wetter.
20-foot winds.......Windy. West winds around 30 mph with gusts to
around 55 mph.
Ridge top winds.....West around 35 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 40 mph.
Mixing Height.......5000-6600 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....38-43.
24 hr trend......8 degrees cooler.
Max humidity........39-45 percent.
24 hr trend......37 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds 15 to 20 mph with gusts to around 45
mph until 0300, then around 10 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.......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.....62-67.
24 hr trend......3 degrees warmer.
Min humidity........23-29 percent.
24 hr trend......5 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.......1600-3600 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....37-42.
24 hr trend......1 degree cooler.
Max humidity........39-45 percent.
24 hr trend......2 percent wetter.
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.......2600-4600 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....65-70.
24 hr trend......3 degrees warmer.
Min humidity........14-20 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 35 mph after
1500.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 4800-6800 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.WEDNESDAY THROUGH FRIDAY...Mostly clear. Lows 43 to 48. Highs
65 to 70. West winds 15 to 20 mph.
.SATURDAY...Partly cloudy. Chance of showers, snow showers and
slight chance of thunderstorms. Lows in the lower 40s. Highs in
the mid 60s. Southwest winds around 15 mph.
.SUNDAY...Partly cloudy with chance of showers, snow showers and
slight chance of thunderstorms. Lows in the upper 30s. Highs in
the upper 50s.
.MONDAY...Partly cloudy. Slight 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.
$$
WYZ414-082245-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
240 PM MDT Mon Sep 7 2026
.THIS AFTERNOON...
Sky/weather.........Sunny.
Chance of thunder...0 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 around 15 mph with gusts to around
35 mph.
Ridge top winds.....West around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 25 mph.
Mixing Height.......5600-6400 ft agl.
Smoke dispersal.....Very good.
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....32-37.
24 hr trend......8 degrees cooler.
Max humidity........66-72 percent.
24 hr trend......37 percent drier.
Humidity recovery...Good.
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.......2000-4000 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.....60-65.
24 hr trend......6 degrees warmer.
Min humidity........25-31 percent.
24 hr trend......7 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.......1600-3600 ft agl until 1200, then 5800-7600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....32-37.
24 hr trend......1 degree warmer.
Max humidity........56-62 percent.
24 hr trend......10 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds around 15 mph with gusts to around
30 mph until 2100, then downslope/downvalley
4-7 mph.
Ridge top winds.....Northwest around 15 mph until 2400, then south.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph until 2400, then south.
Mixing Height.......2000-4000 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....64-69.
24 hr trend......4 degrees warmer.
Min humidity........15-21 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.
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 5200-7200 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Clear. Lows around 40. Winds generally less
than 10 mph.
.THURSDAY THROUGH FRIDAY...Mostly clear. Lows 41 to 46. Highs
66 to 71. Southwest winds around 10 mph.
.SATURDAY...Partly cloudy. Slight chance of showers,
thunderstorms and snow showers. Lows in the lower 40s. Highs in
the upper 60s. Southwest winds around 10 mph.
.SUNDAY...Partly cloudy. Slight chance of showers, thunderstorms
and snow showers. Lows in the upper 30s. Highs in the upper 50s.
.MONDAY...Mostly sunny. Slight chance of showers in the morning,
then slight chance of showers and thunderstorms in the afternoon.
Highs in the lower 60s.
$$
WYZ278-082245-
Upper Green River Basin/Rock Springs BLM-
Including the cities of Big Piney, Farson, and Pinedale
240 PM MDT Mon Sep 7 2026
.THIS AFTERNOON...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....60-65.
24 hr trend......8 degrees cooler.
Min humidity........24-30 percent.
24 hr trend......4 percent wetter.
20-foot winds.......West winds around 20 mph with gusts to around
35 mph.
Ridge top winds.....West around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 30 mph.
Mixing Height.......6800-8200 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....35-40.
24 hr trend......11 degrees cooler.
Max humidity........57-63 percent.
24 hr trend......11 percent drier.
Humidity recovery...Good.
20-foot winds.......Northwest winds 10 to 15 mph with gusts to
around 35 mph until 0300, then
downslope/downvalley 4-7 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.......2600-4600 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......4 degrees warmer.
Min humidity........19-25 percent.
24 hr trend......5 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph with gusts to around 35 mph until
1500, then 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.......1000-3000 ft agl until 1200, then 6000-8000 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....35-40.
24 hr trend......Unchanged.
Max humidity........51-57 percent.
24 hr trend......6 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Northwest winds 10 to 15 mph with gusts to
around 30 mph until 2400, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest around 20 mph until 2400, then north
around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 20 mph until 2400, then north
around 10 mph.
Mixing Height.......3000-5000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....68-73.
24 hr trend......3 degrees warmer.
Min humidity........11-17 percent.
24 hr trend......6 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.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph until 1200, then west
around 20 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.WEDNESDAY THROUGH FRIDAY...Mostly clear. Lows 39 to 44. Highs
72 to 77. West winds around 10 mph.
.SATURDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the mid 70s.
Southwest winds around 10 mph.
.SUNDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the upper 30s. Highs in the upper 60s.
.MONDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 60s.
$$
WYZ277-082245-
Lincoln and Uinta Counties/Lower Elevations-
Including the cities of Evanston, Fort Bridger, and Kemmerer
240 PM MDT Mon Sep 7 2026
.THIS AFTERNOON...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....62-67.
24 hr trend......8 degrees cooler.
Min humidity........25-31 percent.
24 hr trend......7 percent wetter.
20-foot winds.......West winds around 20 mph with gusts to around
35 mph.
Ridge top winds.....West around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 25 mph.
Mixing Height.......6400-7600 ft agl.
Smoke dispersal.....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........62-68 percent.
24 hr trend......15 percent drier.
Humidity recovery...Good.
20-foot winds.......West winds 10 to 15 mph with gusts to around 35
mph until 2400, then downslope/downvalley 4-7
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.......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.....67-72.
24 hr trend......5 degrees warmer.
Min humidity........18-24 percent.
24 hr trend......7 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.....West around 5 mph until 1200, then around 20
mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then west
around 25 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....36-41.
24 hr trend......Unchanged.
Max humidity........51-57 percent.
24 hr trend......11 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Northwest 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 around 15 mph until 2400, then north.
Mixing Height.......2600-4600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....70-75.
24 hr trend......3 degrees warmer.
Min humidity........12-18 percent.
24 hr trend......6 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.....Southwest around 10 mph until 1200, then west
around 20 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.WEDNESDAY THROUGH FRIDAY...Mostly clear. Lows 42 to 47. Highs
73 to 78. West winds around 10 mph.
.SATURDAY...Mostly clear. Slight chance of showers. Lows in the
mid 40s. Highs in the mid 70s. Southwest winds around 15 mph.
.SUNDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 30s. Highs in the upper 60s.
.MONDAY...Mostly sunny. Highs in the upper 60s.
$$
WYZ279-082245-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Including the cities of Green River, Rock Springs, and Wamsutter
240 PM MDT Mon Sep 7 2026
.THIS AFTERNOON...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....67-72.
24 hr trend......6 degrees cooler.
Min humidity........27-33 percent.
24 hr trend......8 percent wetter.
20-foot winds.......West winds around 20 mph with gusts to around
35 mph.
Ridge top winds.....West around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 25 mph.
Mixing Height.......7200-8600 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....43-48.
24 hr trend......9 degrees cooler.
Max humidity........53-59 percent.
24 hr trend......20 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 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 until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....70-75.
24 hr trend......3 degrees warmer.
Min humidity........25-31 percent.
24 hr trend......7 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.......1000-3000 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....43-48.
24 hr trend......1 degree cooler.
Max humidity........49-55 percent.
24 hr trend......4 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Northwest 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 around 20 mph until 2400, then north
around 10 mph.
Mixing Height.......3600-5600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....71-76.
24 hr trend......1 degree warmer.
Min humidity........17-23 percent.
24 hr trend......7 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 around 10 mph until 1200, then around 20
mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph until 1200, then around 20
mph.
Mixing Height.......1000-3000 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Lows 46 to 51. Highs
in the upper 70s. West winds around 10 mph.
.FRIDAY...Partly cloudy. Lows in the upper 40s. Highs in the
upper 70s. Southwest winds around 10 mph.
.SATURDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the upper 70s.
Southwest winds around 10 mph.
.SUNDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the lower 70s.
.MONDAY...Mostly sunny. Slight chance of showers in the morning,
then slight chance of showers and thunderstorms in the afternoon.
Highs in the upper 60s.
$$
WYZ289-082245-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
240 PM MDT Mon Sep 7 2026
.THIS AFTERNOON...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....69-74.
24 hr trend......8 degrees cooler.
Min humidity........20-26 percent.
24 hr trend......6 percent wetter.
20-foot winds.......Breezy. West winds around 25 mph with gusts to
around 45 mph.
Ridge top winds.....West around 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 35 mph.
Mixing Height.......7800-8800 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....44-49.
24 hr trend......9 degrees cooler.
Max humidity........37-43 percent.
24 hr trend......31 percent drier.
Humidity recovery...Poor.
20-foot winds.......West winds 15 to 20 mph with gusts to around 40
mph until 2400, then around 10 mph and gusty.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 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.....70-75.
24 hr trend......2 degrees warmer.
Min humidity........14-20 percent.
24 hr trend......7 percent drier.
20-foot winds.......Breezy. Upslope/upvalley 5-9 mph until 0900.
Winds west 20 to 25 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.....West around 15 mph until 1200, then around 30
mph.
Mixing Height.......1200-3200 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....42-47.
24 hr trend......2 degrees cooler.
Max humidity........46-52 percent.
24 hr trend......13 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......West winds 10 to 15 mph with gusts to around 40
mph until 2400, then downslope/downvalley 4-7
mph.
Ridge top winds.....West around 20 mph until 2400, then north
around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 20 mph until 2400, then
northeast around 10 mph.
Mixing Height.......3800-5800 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....71-76.
24 hr trend......1 degree warmer.
Min humidity........8-14 percent.
24 hr trend......6 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 20 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.WEDNESDAY THROUGH FRIDAY...Mostly clear. Lows 47 to 52. Highs in
the upper 70s. 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.
Southwest winds around 15 mph.
.SUNDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs around 70.
.MONDAY...Partly cloudy. Slight chance of showers in the
afternoon. Highs in the mid 60s.
$$
WYZ300-082245-
Casper Mountain-
240 PM MDT Mon Sep 7 2026
.THIS AFTERNOON...
Sky/weather.........Partly cloudy.
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. West winds around 25 mph with gusts to
around 40 mph.
Ridge top winds.....West around 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 35 mph.
Mixing Height.......8600-9400 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....49-54.
24 hr trend......8 degrees cooler.
Max humidity........28-34 percent.
24 hr trend......26 percent drier.
Humidity recovery...Poor.
20-foot winds.......West winds 10 to 15 mph. Gusts up to 35 mph
until 2400, then 15 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 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.....71-76.
24 hr trend......Unchanged.
Min humidity........15-21 percent.
24 hr trend......10 percent drier.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 35 mph until 1500, then west around 20
mph with gusts to around 35 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.......1400-3400 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....43-48.
24 hr trend......6 degrees cooler.
Max humidity........48-54 percent.
24 hr trend......21 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......West winds 10 to 15 mph with gusts to around 35
mph until 2400, then downslope/downvalley 4-7
mph.
Ridge top winds.....West around 15 mph until 2400, then northeast.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 20 mph until 2400, then
northeast around 10 mph.
Mixing Height.......3800-5800 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Very good until 2400, then poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....70-75.
24 hr trend......1 degree cooler.
Min humidity........9-15 percent.
24 hr trend......5 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph with gusts to around 25 mph.
Ridge top winds.....South around 10 mph until 1200, then west.
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 5600-7600 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.Forecast days 3 through 7......
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 40s. Winds
generally less than 10 mph.
.THURSDAY...Clear. Lows in the mid 50s. Highs in the mid 70s.
Southwest winds around 15 mph.
.FRIDAY...Mostly clear. Lows in the upper 40s. Highs in the mid
70s. Southwest winds around 15 mph.
.SATURDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
Southwest winds around 10 mph.
.SUNDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the mid 40s. Highs in the upper 60s.
.MONDAY...Partly cloudy with slight chance of showers. Highs in
the lower 60s.
$$