Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
464
FNUS55 KRIW 291928
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
128 PM MDT Tue Sep 29 2026
.DISCUSSION...
...Yellowstone NP and Teton dispatch areas (includes fire weather
zones 140...414...415...and 416)...
Dry conditions, clear skies and light winds (10 mph or less) will
be in place across the dispatch area tonight and Wednesday.
...Cody dispatch area (includes fire weather zones 275...276...
282...283...285...286...287...288...and 289)...
RH recovery will be fair tonight across portions of zones 276,
282/285 and 287. Dry conditions, clear skies and light winds (10
mph or less) will be in place across the dispatch area tonight and
Wednesday.
...Casper dispatch area (includes fire weather zones 277...278...
279...280...281...285...289...and 300)...
RH recovery will be fair tonight along the east slopes of the
Bighorns. Otherwise, dry conditions, clear skies and light winds
(10 mph or less) will be in place across the dispatch area tonight
and Wednesday.
...Thunderstorms imply strong gusty and erratic winds...
WYZ280-302130-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
128 PM MDT Tue Sep 29 2026
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....43-48.
24 hr trend......1 degree warmer.
Max humidity........65-71 percent.
24 hr trend......26 percent drier.
Humidity recovery...Good.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph.
Mixing Height.......1600-3600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....68-73.
24 hr trend......Unchanged.
Min humidity........26-32 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....North around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph until 1200, then
northeast.
Mixing Height.......600-2600 ft agl until 1200, then 4000-6000 ft
agl.
Smoke dispersal.....Poor to fair.
.WEDNESDAY NIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....41-46.
24 hr trend......3 degrees cooler.
Max humidity........84-90 percent.
24 hr trend......19 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northeast winds 10 to 15 mph with gusts to
around 30 mph.
Ridge top winds.....Northeast 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 15 mph.
Mixing Height.......1600-3600 ft agl until 2400, then 600-1400 ft
agl.
Smoke dispersal.....Poor.
.THURSDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....68-73.
24 hr trend......Unchanged.
Min humidity........36-42 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....East around 10 mph until 1200, then south.
Chc of wetting rain.Zero percent.
Transport winds.....East around 10 mph until 1200, then southwest.
Mixing Height.......1000-3000 ft agl until 1200, then 3600-5600 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Mostly clear. Lows in the lower 40s. Northeast
winds around 10 mph.
.FRIDAY THROUGH SUNDAY...Mostly clear. Lows 42 to 47. Highs 69 to
74. Southwest winds around 10 mph.
.MONDAY...Partly cloudy. Lows in the upper 40s. Highs in the
upper 70s.
.TUESDAY...Mostly sunny. Highs in the mid 70s.
$$
WYZ283-302130-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
128 PM MDT Tue Sep 29 2026
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....44-49.
24 hr trend......3 degrees warmer.
Max humidity........61-67 percent.
24 hr trend......23 percent drier.
Humidity recovery...Good.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 10
mph.
Ridge top winds.....East around 10 mph until 2400, then west.
Chc of wetting rain.Zero percent.
Transport winds.....East around 10 mph until 2400, then west.
Mixing Height.......800-2800 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....67-72.
24 hr trend......2 degrees warmer.
Min humidity........28-34 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 10 mph.
Ridge top winds.....North around 10 mph until 1200, then east.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph until 1200, then
northeast.
Mixing Height.......400-2200 ft agl until 1200, then 3000-5000 ft
agl.
Smoke dispersal.....Poor.
.WEDNESDAY NIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....42-47.
24 hr trend......2 degrees cooler.
Max humidity........73-79 percent.
24 hr trend......14 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph until 2100, then
northeast around 10 mph until 2400, then
downslope/downvalley 4-7 mph. Gusts up to 25
mph.
Ridge top winds.....Northeast around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 10 mph.
Mixing Height.......1200-3200 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.THURSDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....66-71.
24 hr trend......1 degree cooler.
Min humidity........38-44 percent.
24 hr trend......11 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....Southeast around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 10 mph until 1200, then
southwest.
Mixing Height.......600-2600 ft agl until 1200, then 2800-4600 ft
agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Mostly clear. Lows in the mid 40s. Winds
generally less than 10 mph.
.FRIDAY THROUGH SUNDAY...Mostly clear. Lows in the upper 40s.
Highs 69 to 74. Winds generally less than 10 mph.
.MONDAY...Partly cloudy. Lows in the upper 40s. Highs in the mid
70s.
.TUESDAY...Mostly sunny. Highs in the mid 70s.
$$
WYZ285-302130-
South Bighorn Mountains-
128 PM MDT Tue Sep 29 2026
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....43-48.
24 hr trend......3 degrees warmer.
Max humidity........51-57 percent.
24 hr trend......34 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....North around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......800-2800 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....63-68.
24 hr trend......1 degree warmer.
Min humidity........30-36 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northeast around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northeast around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph.
Mixing Height.......800-2800 ft agl until 1200, then 3600-5600 ft
agl.
Smoke dispersal.....Poor to fair.
.WEDNESDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....40-45.
24 hr trend......4 degrees cooler.
Max humidity........79-85 percent.
24 hr trend......28 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northeast winds 10 to 15 mph with gusts to
around 25 mph.
Ridge top winds.....Northeast around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 15 mph.
Mixing Height.......1000-3000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.THURSDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....59-64.
24 hr trend......2 degrees cooler.
Min humidity........41-47 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
around 10 mph until 1500, then west. Gusts up
to 20 mph.
Ridge top winds.....Southeast around 10 mph until 1200, then
southwest.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 10 mph until 1200, then west.
Mixing Height.......800-2800 ft agl until 1200, then 3000-5000 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Mostly clear. Lows in the lower 40s. Winds
generally less than 10 mph.
.FRIDAY THROUGH SUNDAY...Mostly clear. Lows 44 to 49. Highs 62 to
67. South winds around 10 mph.
.MONDAY...Partly cloudy. Lows around 50. Highs in the lower 70s.
.TUESDAY...Mostly sunny. Highs in the upper 60s.
$$
WYZ281-302130-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
128 PM MDT Tue Sep 29 2026
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....46-51.
24 hr trend......2 degrees warmer.
Max humidity........59-65 percent.
24 hr trend......19 percent drier.
Humidity recovery...Good.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....North around 10 mph until 2400, then northwest.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph until 2400, then west.
Mixing Height.......1000-3000 ft agl until 2400, then 400 ft agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....64-69.
24 hr trend......3 degrees cooler.
Min humidity........32-38 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200. Winds
northeast around 10 mph after 1500. Gusts up to
15 mph.
Ridge top winds.....North around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph.
Mixing Height.......600-2600 ft agl until 1200, then 4000-6000 ft
agl.
Smoke dispersal.....Poor to fair.
.WEDNESDAY NIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....41-46.
24 hr trend......3 degrees cooler.
Max humidity........77-83 percent.
24 hr trend......15 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......North winds 10 to 15 mph with gusts to around
25 mph.
Ridge top winds.....North around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 15 mph.
Mixing Height.......1400-3400 ft agl until 2400, then 600-1000 ft
agl.
Smoke dispersal.....Poor.
.THURSDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....63-68.
24 hr trend......2 degrees cooler.
Min humidity........44-50 percent.
24 hr trend......12 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southeast 10 to 15 mph. Gusts up to 25 mph.
Ridge top winds.....East around 10 mph until 1200, then southeast
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....East around 10 mph until 1200, then southwest
around 20 mph.
Mixing Height.......800-2800 ft agl until 1200, then 3600-5600 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Partly cloudy. Slight chance of showers in the
evening. Lows in the mid 40s. North winds around 10 mph.
.FRIDAY THROUGH SUNDAY...Mostly clear. Lows 45 to 50. Highs 69 to
74. South winds around 10 mph.
.MONDAY...Partly cloudy. Lows in the lower 50s. Highs around 80.
.TUESDAY...Mostly sunny. Highs in the upper 70s.
$$
WYZ282-302130-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
128 PM MDT Tue Sep 29 2026
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....42-47.
24 hr trend......3 degrees warmer.
Max humidity........57-63 percent.
24 hr trend......22 percent drier.
Humidity recovery...Good.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 10
mph.
Ridge top winds.....Southeast around 10 mph until 2400, then
southwest.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 10 mph until 2400, then
southwest.
Mixing Height.......1000-3000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....66-71.
24 hr trend......Unchanged.
Min humidity........27-33 percent.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 10 mph.
Ridge top winds.....West around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph until 1200, then north.
Mixing Height.......400-2200 ft agl until 1200, then 3000-5000 ft
agl.
Smoke dispersal.....Poor.
.WEDNESDAY NIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....40-45.
24 hr trend......3 degrees cooler.
Max humidity........75-81 percent.
24 hr trend......19 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph until 2100, then
north around 10 mph until 2400, then northwest
until 0300, then downslope/downvalley 4-7 mph.
Gusts up to 25 mph.
Ridge top winds.....North around 15 mph until 2400, then west.
Chc of wetting rain.Zero percent.
Transport winds.....North 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor.
.THURSDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....63-68.
24 hr trend......2 degrees cooler.
Min humidity........37-43 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
around 10 mph until 1500, then north. Gusts up
to 15 mph.
Ridge top winds.....South around 10 mph until 1200, then northeast.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then west.
Mixing Height.......600-2600 ft agl until 1200, then 3200-4800 ft
agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Mostly clear. Lows in the mid 40s. Winds
generally less than 10 mph.
.FRIDAY THROUGH SUNDAY...Mostly clear. Lows 46 to 51. Highs 71 to
76. Winds generally less than 10 mph.
.MONDAY...Partly cloudy. Lows in the lower 50s. Highs in the
upper 70s.
.TUESDAY...Mostly sunny. Highs in the upper 70s.
$$
WYZ275-302130-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
128 PM MDT Tue Sep 29 2026
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....43-48.
24 hr trend......5 degrees warmer.
Max humidity........57-63 percent.
24 hr trend......25 percent drier.
Humidity recovery...Good.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....East around 10 mph until 2400, then northwest.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 10 mph until 2400, then north.
Mixing Height.......600-2600 ft agl until 2400, then 400 ft agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....63-68.
24 hr trend......Unchanged.
Min humidity........30-36 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then north
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......400-2400 ft agl until 1200, then 3400-5400 ft
agl.
Smoke dispersal.....Poor to fair.
.WEDNESDAY NIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....40-45.
24 hr trend......3 degrees cooler.
Max humidity........75-81 percent.
24 hr trend......17 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......North winds 10 to 15 mph with gusts to around
30 mph.
Ridge top winds.....North 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North 15 to 20 mph.
Mixing Height.......1200-3200 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor.
.THURSDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....60-65.
24 hr trend......4 degrees cooler.
Min humidity........39-45 percent.
24 hr trend......9 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then north
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....West around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then
northwest.
Mixing Height.......400-2400 ft agl until 1200, then 2800-4200 ft
agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Partly cloudy. Lows in the lower 40s. Winds
generally less than 10 mph.
.FRIDAY THROUGH SUNDAY...Mostly clear. Lows 45 to 50. Highs 70 to
75. Winds generally less than 10 mph.
.MONDAY...Partly cloudy. Lows around 50. Highs in the upper 70s.
.TUESDAY...Mostly sunny. Highs in the upper 70s.
$$
WYZ276-302130-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
128 PM MDT Tue Sep 29 2026
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....45-50.
24 hr trend......3 degrees warmer.
Max humidity........53-59 percent.
24 hr trend......23 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Northeast winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....West around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 2400, then west.
Mixing Height.......1200-3200 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....65-70.
24 hr trend......2 degrees cooler.
Min humidity........31-37 percent.
24 hr trend......6 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northeast around 10 mph. Gusts up to 15 mph.
Ridge top winds.....West around 10 mph until 1200, then northeast.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......800-2800 ft agl until 1200, then 3800-5600 ft
agl.
Smoke dispersal.....Poor to fair.
.WEDNESDAY NIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....41-46.
24 hr trend......6 degrees cooler.
Max humidity........76-82 percent.
24 hr trend......23 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......North winds around 10 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 25
mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.THURSDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....62-67.
24 hr trend......3 degrees cooler.
Min humidity........41-47 percent.
24 hr trend......9 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northeast 10 to 15 mph. Gusts up to 20 mph.
Ridge top winds.....Northwest around 10 mph until 1200, then
northeast.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph until 1200, then north.
Mixing Height.......600-2600 ft agl until 1200, then 2800-4600 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Partly cloudy. Lows in the lower 40s. Winds
generally less than 10 mph.
.FRIDAY THROUGH SUNDAY...Mostly clear. Lows 45 to 50. Highs 67 to
72. Southwest winds around 10 mph.
.MONDAY...Partly cloudy. Lows in the lower 50s. Highs in the mid
70s.
.TUESDAY...Mostly sunny. Highs in the lower 70s.
$$
WYZ287-302130-
Owl Creek Mountains-
128 PM MDT Tue Sep 29 2026
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....45-50.
24 hr trend......2 degrees warmer.
Max humidity........51-57 percent.
24 hr trend......27 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 10
mph.
Ridge top winds.....South around 10 mph until 2400, then west.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 2400, then west.
Mixing Height.......1000-3000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....62-67.
24 hr trend......Unchanged.
Min humidity........30-36 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 10 mph.
Ridge top winds.....Northwest around 10 mph until 1200, then
northeast.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph.
Mixing Height.......800-2800 ft agl until 1200, then 3600-5600 ft
agl.
Smoke dispersal.....Poor.
.WEDNESDAY NIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....40-45.
24 hr trend......4 degrees cooler.
Max humidity........69-75 percent.
24 hr trend......19 percent wetter.
Humidity recovery...Good.
20-foot winds.......North winds around 10 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....North 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.THURSDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....59-64.
24 hr trend......2 degrees cooler.
Min humidity........42-48 percent.
24 hr trend......9 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
around 10 mph until 1500, then east. Gusts up
to 15 mph.
Ridge top winds.....South around 15 mph until 1200, then southeast.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph.
Mixing Height.......600-2600 ft agl until 1200, then 2800-4600 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Mostly clear. Lows in the lower 40s. Winds
generally less than 10 mph.
.FRIDAY THROUGH SUNDAY...Mostly clear. Lows 46 to 51. Highs 65 to
70. South winds around 10 mph.
.MONDAY...Partly cloudy. Lows in the lower 50s. Highs in the
lower 70s.
.TUESDAY...Mostly sunny. Highs in the lower 70s.
$$
WYZ286-302130-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
128 PM MDT Tue Sep 29 2026
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....39-44.
24 hr trend......6 degrees warmer.
Max humidity........67-73 percent.
24 hr trend......24 percent drier.
Humidity recovery...Good.
20-foot winds.......West winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph until 2400, then
west around 10 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....West around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1200-3200 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....58-63.
24 hr trend......1 degree warmer.
Min humidity........37-43 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph until 1500, then
northeast. Gusts up to 15 mph.
Ridge top winds.....West around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 4000-6000 ft
agl.
Smoke dispersal.....Poor to fair.
.WEDNESDAY NIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....35-40.
24 hr trend......3 degrees cooler.
Max humidity........77-83 percent.
24 hr trend......11 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northeast winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Northeast around 10 mph until 2400, then
southwest.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 10 mph until 2400, then
southwest.
Mixing Height.......1200-3200 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.THURSDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....56-61.
24 hr trend......2 degrees cooler.
Min humidity........43-49 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then west
around 10 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 4000-6000 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Partly cloudy. Lows in the upper 30s. Winds
generally less than 10 mph.
.FRIDAY THROUGH SUNDAY...Mostly clear. Lows 39 to 44. Highs 58 to
63. West winds around 10 mph.
.MONDAY...Partly cloudy. Lows in the lower 40s. Highs in the mid
60s.
.TUESDAY...Mostly sunny. Highs in the lower 60s.
$$
WYZ140-302130-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
128 PM MDT Tue Sep 29 2026
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....34-39.
24 hr trend......4 degrees warmer.
Max humidity........80-86 percent.
24 hr trend......13 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....Southwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph.
Mixing Height.......1000-3000 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....61-66.
24 hr trend......1 degree warmer.
Min humidity........33-39 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then west
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest around 5 mph until 1200, then west
around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 5 mph until 1200, then west
around 15 mph.
Mixing Height.......600-2600 ft agl until 1200, then 4000-6000 ft
agl.
Smoke dispersal.....Poor to fair.
.WEDNESDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....32-37.
24 hr trend......2 degrees cooler.
Max humidity........81-87 percent.
24 hr trend......4 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Northwest around 10 mph until 2400, then
southeast.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph until 2400, then south.
Mixing Height.......1200-3200 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.THURSDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....59-64.
24 hr trend......2 degrees cooler.
Min humidity........40-46 percent.
24 hr trend......4 percent wetter.
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 4000-6000 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Partly cloudy. Lows in the mid 30s. Winds
generally less than 10 mph.
.FRIDAY THROUGH SUNDAY...Mostly clear. Lows 35 to 40. Highs 59 to
64. Winds generally less than 10 mph.
.MONDAY...Partly cloudy. Lows in the upper 30s. Highs in the
lower 60s.
.TUESDAY...Mostly sunny. Highs in the lower 60s.
$$
WYZ415-302130-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
128 PM MDT Tue Sep 29 2026
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....34-39.
24 hr trend......3 degrees warmer.
Max humidity........76-82 percent.
24 hr trend......18 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....North around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph.
Mixing Height.......600-2600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....59-64.
24 hr trend......3 degrees warmer.
Min humidity........36-42 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northeast around 10 mph until 1200, then
northwest.
Chc of wetting rain.Zero percent.
Transport winds.....North around 5 mph until 1200, then northwest.
Mixing Height.......400-2400 ft agl until 1200, then 3400-5400 ft
agl.
Smoke dispersal.....Poor.
.WEDNESDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....33-38.
24 hr trend......Unchanged.
Max humidity........77-83 percent.
24 hr trend......1 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Northwest around 10 mph until 2400, then east.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph until 2400, then south.
Mixing Height.......800-2800 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.THURSDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....58-63.
24 hr trend......2 degrees cooler.
Min humidity........43-49 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then west
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....South around 10 mph until 1200, then west.
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 4200-6200 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.THURSDAY THROUGH FRIDAY...Mostly clear. Lows 35 to 40. Highs in
the lower 60s. Winds generally less than 10 mph.
.SATURDAY THROUGH SUNDAY...Mostly clear. Lows 37 to 42. Highs in
the mid 60s. Winds generally less than 10 mph.
.MONDAY...Partly cloudy. Lows around 40. Highs in the mid 60s.
.TUESDAY...Mostly sunny. Highs in the lower 60s.
$$
WYZ416-302130-
West Wind River Mountains/East Zone Bridger Teton NF-
128 PM MDT Tue Sep 29 2026
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....35-40.
24 hr trend......4 degrees warmer.
Max humidity........72-78 percent.
24 hr trend......26 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....North around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph.
Mixing Height.......1000-3000 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....60-65.
24 hr trend......3 degrees warmer.
Min humidity........31-37 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....North around 10 mph until 1200, then northwest.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 10 mph until 1200, then
northwest.
Mixing Height.......800-2800 ft agl until 1200, then 3800-5800 ft
agl.
Smoke dispersal.....Poor to fair.
.WEDNESDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....34-39.
24 hr trend......1 degree cooler.
Max humidity........78-84 percent.
24 hr trend......6 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......North winds around 10 mph until 2400, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....Northeast 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Poor.
.THURSDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....56-61.
24 hr trend......3 degrees cooler.
Min humidity........40-46 percent.
24 hr trend......5 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 20 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.
Mixing Height.......1000-3000 ft agl until 1200, then 4000-5800 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.THURSDAY THROUGH SUNDAY...Mostly clear. Lows 35 to 40. Highs
around 60. Winds generally less than 10 mph.
.MONDAY...Partly cloudy. Lows in the upper 30s. Highs around 60.
.TUESDAY...Mostly sunny. Highs in the upper 50s.
$$
WYZ288-302130-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
128 PM MDT Tue Sep 29 2026
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....38-43.
24 hr trend......4 degrees warmer.
Max humidity........65-71 percent.
24 hr trend......30 percent drier.
Humidity recovery...Good.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....West around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph.
Mixing Height.......1200-3200 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....60-65.
24 hr trend......2 degrees warmer.
Min humidity........32-38 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northeast around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest around 10 mph until 1200, then
northeast.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph.
Mixing Height.......800-2800 ft agl until 1200, then 3200-5200 ft
agl.
Smoke dispersal.....Poor to fair.
.WEDNESDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....36-41.
24 hr trend......1 degree cooler.
Max humidity........75-81 percent.
24 hr trend......9 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Northeast around 10 mph until 2400, then west.
Chc of wetting rain.Zero percent.
Transport winds.....East around 10 mph.
Mixing Height.......800-2800 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Poor.
.THURSDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....58-63.
24 hr trend......1 degree cooler.
Min humidity........37-43 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph with gusts to around 25 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 3600-5600 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.THURSDAY THROUGH SUNDAY...Mostly clear. Lows 38 to 43. Highs
59 to 64. West winds around 10 mph.
.MONDAY...Partly cloudy. Lows in the lower 40s. Highs in the mid
60s.
.TUESDAY...Mostly sunny. Highs in the lower 60s.
$$
WYZ414-302130-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
128 PM MDT Tue Sep 29 2026
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....34-39.
24 hr trend......2 degrees warmer.
Max humidity........75-81 percent.
24 hr trend......28 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....North around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph.
Mixing Height.......1000-3000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....59-64.
24 hr trend......3 degrees warmer.
Min humidity........32-38 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....North 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North 10 to 15 mph.
Mixing Height.......400-2400 ft agl until 1200, then 3200-5200 ft
agl.
Smoke dispersal.....Poor to fair.
.WEDNESDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....33-38.
24 hr trend......Unchanged.
Max humidity........77-83 percent.
24 hr trend......2 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph with gusts to
around 25 mph until 2400, then
downslope/downvalley 4-7 mph.
Ridge top winds.....North 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......800-2800 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.THURSDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....58-63.
24 hr trend......1 degree cooler.
Min humidity........36-42 percent.
24 hr trend......3 percent wetter.
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.
Mixing Height.......800-2800 ft agl until 1200, then 4200-5800 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.THURSDAY THROUGH SATURDAY...Mostly clear. Lows 37 to 42. Highs
in the mid 60s. Winds generally less than 10 mph.
.SUNDAY...Partly cloudy. Lows in the lower 40s. Highs in the mid
60s. Winds generally less than 10 mph.
.MONDAY...Partly cloudy. Lows in the lower 40s. Highs in the mid
60s.
.TUESDAY...Mostly sunny. Highs in the lower 60s.
$$
WYZ278-302130-
Upper Green River Basin/Rock Springs BLM-
Including the cities of Big Piney, Farson, and Pinedale
128 PM MDT Tue Sep 29 2026
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....36-41.
24 hr trend......1 degree warmer.
Max humidity........72-78 percent.
24 hr trend......16 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph until 2400, then
north around 10 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Northwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....62-67.
24 hr trend......4 degrees warmer.
Min humidity........26-32 percent.
24 hr trend......3 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph.
Mixing Height.......400-2400 ft agl until 1200, then 3600-5600 ft
agl.
Smoke dispersal.....Poor.
.WEDNESDAY NIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....36-41.
24 hr trend......Unchanged.
Max humidity........77-83 percent.
24 hr trend......6 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph until 2100, then
north around 10 mph with gusts to around 25 mph
until 0300, then downslope/downvalley 4-7 mph.
Ridge top winds.....North 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.THURSDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....61-66.
24 hr trend......2 degrees cooler.
Min humidity........34-40 percent.
24 hr trend......8 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then west
around 10 mph with higher gusts.
Ridge top winds.....North around 10 mph until 1200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph until 1200, then west.
Mixing Height.......800-2800 ft agl until 1200, then 4000-6000 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.THURSDAY THROUGH SUNDAY...Mostly clear. Lows 36 to 41. Highs in
the upper 60s. Winds generally less than 10 mph.
.MONDAY...Partly cloudy. Lows in the upper 30s. Highs in the
upper 60s.
.TUESDAY...Mostly sunny. Highs in the upper 60s.
$$
WYZ277-302130-
Lincoln and Uinta Counties/Lower Elevations-
Including the cities of Evanston, Fort Bridger, and Kemmerer
128 PM MDT Tue Sep 29 2026
.TONIGHT...
Sky/weather.........Clear.
Chance of thunder...0 percent.
Min temperature.....36-41.
24 hr trend......2 degrees warmer.
Max humidity........73-79 percent.
24 hr trend......23 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph.
Mixing Height.......1600-3600 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....63-68.
24 hr trend......4 degrees warmer.
Min humidity........27-33 percent.
24 hr trend......6 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....North around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph.
Mixing Height.......400-2000 ft agl until 1200, then 3200-5200 ft
agl.
Smoke dispersal.....Poor.
.WEDNESDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....35-40.
24 hr trend......1 degree cooler.
Max humidity........78-84 percent.
24 hr trend......6 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds 10 to 15 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 25
mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.THURSDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....62-67.
24 hr trend......1 degree cooler.
Min humidity........29-35 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then west
around 10 mph with higher gusts.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......600-2600 ft agl until 1200, then 3400-5400 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Clear. Lows in the upper 30s. Winds generally
less than 10 mph.
.FRIDAY THROUGH SUNDAY...Mostly clear. Lows 40 to 45. Highs
around 70. Winds generally less than 10 mph.
.MONDAY...Partly cloudy. Lows in the lower 40s. Highs around 70.
.TUESDAY...Mostly sunny. Highs in the upper 60s.
$$
WYZ279-302130-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Including the cities of Green River, Rock Springs, and Wamsutter
128 PM MDT Tue Sep 29 2026
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....40-45.
24 hr trend......1 degree cooler.
Max humidity........74-80 percent.
24 hr trend......19 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....North around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph.
Mixing Height.......1800-3800 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....62-67.
24 hr trend......3 degrees warmer.
Min humidity........29-35 percent.
24 hr trend......9 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
northeast around 10 mph. Gusts up to 20 mph.
Ridge top winds.....North 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast 10 to 15 mph.
Mixing Height.......600-2600 ft agl until 1200, then 3600-5600 ft
agl.
Smoke dispersal.....Poor to fair.
.WEDNESDAY NIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....41-46.
24 hr trend......2 degrees cooler.
Max humidity........70-76 percent.
24 hr trend......3 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....North around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.THURSDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....63-68.
24 hr trend......1 degree warmer.
Min humidity........35-41 percent.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then west
around 10 mph with higher gusts.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 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......
.THURSDAY NIGHT...Clear. Lows in the lower 40s. Winds generally
less than 10 mph.
.FRIDAY THROUGH SUNDAY...Mostly clear. Lows 41 to 46. Highs 69 to
74. Winds generally less than 10 mph.
.MONDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the lower 70s.
.TUESDAY...Mostly sunny. Highs in the lower 70s.
$$
WYZ289-302130-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
128 PM MDT Tue Sep 29 2026
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....41-46.
24 hr trend......3 degrees warmer.
Max humidity........66-72 percent.
24 hr trend......27 percent drier.
Humidity recovery...Good.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....Northeast around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 10 mph.
Mixing Height.......1800-3800 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....63-68.
24 hr trend......2 degrees warmer.
Min humidity........28-34 percent.
24 hr trend......3 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northeast around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northeast 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast 10 to 15 mph.
Mixing Height.......800-2800 ft agl until 1200, then 3800-5800 ft
agl.
Smoke dispersal.....Poor to fair.
.WEDNESDAY NIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....39-44.
24 hr trend......3 degrees cooler.
Max humidity........77-83 percent.
24 hr trend......15 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph until 2100, then
northeast around 10 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 30
mph.
Ridge top winds.....Northeast 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.THURSDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....64-69.
24 hr trend......Unchanged.
Min humidity........31-37 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph with gusts to around 25
mph.
Ridge top winds.....East around 10 mph until 1200, then southwest.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 10 mph until 1200, then
southwest.
Mixing Height.......800-2800 ft agl until 1200, then 3800-5800 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Mostly clear. Lows around 40. Winds generally
less than 10 mph.
.FRIDAY THROUGH SUNDAY...Mostly clear. Lows 41 to 46. Highs 67 to
72. Southwest winds around 10 mph.
.MONDAY...Partly cloudy. Lows in the mid 40s. Highs in the lower
70s.
.TUESDAY...Mostly sunny. Highs in the lower 70s.
$$
WYZ300-302130-
Casper Mountain-
128 PM MDT Tue Sep 29 2026
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....42-47.
24 hr trend......1 degree warmer.
Max humidity........70-76 percent.
24 hr trend......22 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 10
mph.
Ridge top winds.....Northeast around 10 mph until 2400, then
southeast.
Chc of wetting rain.Zero percent.
Transport winds.....East around 10 mph until 2400, then southeast.
Mixing Height.......1400-3400 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Poor.
.WEDNESDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....62-67.
24 hr trend......Unchanged.
Min humidity........32-38 percent.
24 hr trend......4 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northeast around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northeast 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....East 10 to 15 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 4600-6400 ft
agl.
Smoke dispersal.....Poor to fair.
.WEDNESDAY NIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....39-44.
24 hr trend......4 degrees cooler.
Max humidity........82-88 percent.
24 hr trend......12 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....Northeast around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....East around 10 mph.
Mixing Height.......1400-3400 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Poor.
.THURSDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....62-67.
24 hr trend......Unchanged.
Min humidity........42-48 percent.
24 hr trend......6 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
around 10 mph until 1500, then upslope/upvalley
5-9 mph. Gusts up to 20 mph.
Ridge top winds.....Southeast around 10 mph until 1200, then
southwest.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 10 mph until 1200, then
southwest.
Mixing Height.......1000-3000 ft agl until 1200, then 4000-6000 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Mostly clear. Lows around 40. Winds generally
less than 10 mph.
.FRIDAY THROUGH SUNDAY...Mostly clear. Lows 42 to 47. Highs 63 to
68. Winds generally less than 10 mph.
.MONDAY...Partly cloudy. Lows in the upper 40s. Highs in the
lower 70s.
.TUESDAY...Mostly sunny. Highs in the upper 60s.
$$