Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
298
FNUS55 KRIW 131830
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
1230 PM MDT Sun Sep 13 2026
.DISCUSSION...
...Yellowstone NP and Teton dispatch areas (includes fire weather
zones 140...414...415...and 416)...
Dry and breezy conditions for the remainder of the afternoon and
evening, but RH values remain above critical thresholds. Mixing
and smoke dispersal will remain very good with the breezy winds. A
weather system and cold front pushes through after midnight into
Monday morning brining precipitation chances (20-30%) and winds
remaining elevation through the overnight hours into much of
Monday.
...Cody dispatch area (includes fire weather zones 275...276...
282...283...285...286...287...288...and 289)...
***RED FLAG WARNING FOR ZONES 279, 280, 289 AND 300 FROM 12
PM TO 8 PM MONDAY AFTERNOON***
Gusty winds continue through the afternoon and evening as RH
values remain above critical thresholds. Isolated storm chances
(10-20%) for zones 279 and 289 after 16-1700 through sunset. More
widespread after midnight and overnight associated with a storm
system that will bring very strong winds across zones 276/286/288
with all zones remaining gusty through the overnight and much of
Monday. Mixing and smoke dispersal will remain very good to
excellent throughout Sunday and Sunday night.
...Casper dispatch area (includes fire weather zones 277...278...
279...280...281...285...289...and 300)...
***RED FLAG WARNING FOR ZONES 279, 280, 289 AND 300 FROM 12
PM TO 8 PM MONDAY AFTERNOON***
Gusty winds continue through the afternoon and evening as RH
values remain above critical thresholds. Isolated storm chances
(10-20%) for zones 279 and 289 after 16-1700 through sunset. More
widespread after midnight and overnight associated with a storm
system that will bring gusty winds through the overnight and much
of Monday. Mixing and smoke dispersal will remain very good to
excellent throughout Sunday and Sunday night.
...Thunderstorms imply strong gusty and erratic winds...
WYZ280-142030-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
1230 PM MDT Sun Sep 13 2026
...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT MONDAY...
.THIS AFTERNOON...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....82-87.
24 hr trend......6 degrees warmer.
Min humidity........20-26 percent.
24 hr trend......Unchanged.
20-foot winds.......Southwest winds around 15 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 30 mph.
Mixing Height.......9400-11000 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Showers likely in the evening. Slight chance of
thunderstorms through the night. Chance of
showers after midnight. Chance of precipitation
70 percent.
Chance of thunder...20 percent.
Min temperature.....54-59.
24 hr trend......10 degrees warmer.
Max humidity........68-74 percent.
24 hr trend......17 percent drier.
Humidity recovery...Good.
20-foot winds.......Breezy. Southwest winds 20 to 25 mph. Gusts up
to 30 mph until 2400, then 40 mph.
Ridge top winds.....Southwest 20 to 25 mph.
Chc of wetting rain.10 percent until 2400, then zero percent.
Transport winds.....Southwest 20 to 25 mph.
Mixing Height.......3400-5400 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....70-75.
24 hr trend......13 degrees cooler.
Min humidity........13-19 percent.
24 hr trend......6 percent drier.
20-foot winds.......Windy. West winds 25 to 30 mph with gusts to
around 45 mph.
Ridge top winds.....West around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 25 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 6000-8000 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.MONDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....41-46.
24 hr trend......16 degrees cooler.
Max humidity........64-70 percent.
24 hr trend......4 percent wetter.
Humidity recovery...Good.
20-foot winds.......Northwest winds around 15 mph until 2100, then
northeast until 0300, then downslope/downvalley
4-7 mph. Gusts up to 30 mph.
Ridge top winds.....Northeast 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast 15 to 20 mph.
Mixing Height.......2600-4600 ft agl until 2400, then 600-1800 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....71-76.
24 hr trend......Unchanged.
Min humidity........23-29 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then east
around 10 mph. Gusts up to 25 mph.
Ridge top winds.....East 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....East around 15 mph until 1200, then south.
Mixing Height.......800-2800 ft agl until 1200, then 3600-5600 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Partly cloudy. Lows in the lower 50s. Southeast
winds around 10 mph.
.WEDNESDAY THROUGH THURSDAY...Partly cloudy with chance of
showers and slight chance of thunderstorms. Lows 46 to 51. Highs
73 to 78. South winds around 10 mph.
.FRIDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the mid 40s. Highs in the lower 70s.
Northwest winds around 10 mph.
.SATURDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the lower 70s.
.SUNDAY...Mostly sunny. Highs in the mid 70s.
$$
WYZ283-142030-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
1230 PM MDT Sun Sep 13 2026
...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT MONDAY...
.THIS AFTERNOON...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....78-83.
24 hr trend......9 degrees warmer.
Min humidity........20-26 percent.
24 hr trend......7 percent drier.
20-foot winds.......Southwest winds around 20 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 30 mph.
Mixing Height.......8600-10400 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of thunderstorms
in the evening. Slight chance of showers until
early morning. Chance of precipitation 20
percent.
Chance of thunder...10 percent.
Min temperature.....45-50.
24 hr trend......4 degrees warmer.
Max humidity........54-60 percent.
24 hr trend......18 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Breezy. Southwest winds 15 to 20 mph until
0300, then northwest around 25 mph. Gusts up to
40 mph.
Ridge top winds.....Southwest around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph.
Mixing Height.......3000-5000 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good until 2400, then poor.
.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....66-71.
24 hr trend......13 degrees cooler.
Min humidity........17-23 percent.
24 hr trend......3 percent drier.
20-foot winds.......Breezy. Northwest winds 20 to 25 mph with gusts
to around 50 mph.
Ridge top winds.....Northwest around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 25 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good.
.MONDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....38-43.
24 hr trend......10 degrees cooler.
Max humidity........60-66 percent.
24 hr trend......5 percent wetter.
Humidity recovery...Good.
20-foot winds.......North winds 10 to 15 mph with gusts to around
30 mph until 2400, then downslope/downvalley
4-7 mph until 0300, then northeast around 10
mph and gusty.
Ridge top winds.....North 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 15 mph until 2400, then east.
Mixing Height.......2600-4600 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....68-73.
24 hr trend......1 degree warmer.
Min humidity........21-27 percent.
24 hr trend......5 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then east
around 10 mph until 1200, then upslope/upvalley
5-9 mph until 1500, then east around 10 mph.
Gusts up to 20 mph.
Ridge top winds.....East around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast 10 to 15 mph.
Mixing Height.......800-2800 ft agl until 1200, then 3600-5600 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly clear. Lows in the upper 40s. West winds
around 10 mph.
.WEDNESDAY THROUGH THURSDAY...Partly cloudy with chance of
showers and slight chance of thunderstorms. Lows in the upper
40s. Highs 72 to 77. Southwest winds around 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers. Lows in the mid
40s. Highs in the lower 70s. Winds generally less than 10 mph.
.SATURDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the lower 70s.
.SUNDAY...Mostly sunny. Highs in the lower 70s.
$$
WYZ285-142030-
South Bighorn Mountains-
1230 PM MDT Sun Sep 13 2026
.THIS AFTERNOON...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....75-80.
24 hr trend......8 degrees warmer.
Min humidity........19-25 percent.
24 hr trend......8 percent drier.
20-foot winds.......Southwest winds around 20 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 30 mph.
Mixing Height.......9000-10200 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms. Chance of
precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....46-51.
24 hr trend......4 degrees warmer.
Max humidity........65-71 percent.
24 hr trend......6 percent drier.
Humidity recovery...Good.
20-foot winds.......Breezy. Southwest winds 20 to 25 mph until
0300, then west. Gusts up to 40 mph.
Ridge top winds.....Southwest around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph.
Mixing Height.......3200-5200 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....60-65.
24 hr trend......16 degrees cooler.
Min humidity........18-24 percent.
24 hr trend......Unchanged.
20-foot winds.......Breezy. Northwest winds around 25 mph with
gusts to around 40 mph.
Ridge top winds.....Northwest around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 25 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 5000-6400 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good.
.MONDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....37-42.
24 hr trend......11 degrees cooler.
Max humidity........62-68 percent.
24 hr trend......2 percent drier.
Humidity recovery...Good.
20-foot winds.......North winds 10 to 15 mph with gusts to around
30 mph until 2400, then downslope/downvalley
4-7 mph.
Ridge top winds.....North around 15 mph until 2400, then east.
Chc of wetting rain.Zero percent.
Transport winds.....North around 15 mph until 2400, then south.
Mixing Height.......1600-3600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....64-69.
24 hr trend......2 degrees warmer.
Min humidity........22-28 percent.
24 hr trend......5 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southeast 10 to 15 mph. Gusts up to 20 mph.
Ridge top winds.....Southeast around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph.
Mixing Height.......800-2800 ft agl until 1200, then 3400-5200 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Warmer. Mostly clear. Lows around 50. Southeast
winds around 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers. Lows in the
mid 40s. Highs in the upper 60s. Northeast winds around 10 mph.
.THURSDAY...Partly cloudy with chance of showers and slight
chance of thunderstorms. Lows around 50. Highs in the upper 60s.
Southwest winds around 10 mph.
.FRIDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the mid 40s. Highs in the mid 60s.
Northwest winds around 10 mph.
.SATURDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the mid 60s.
.SUNDAY...Mostly sunny. Highs in the upper 60s.
$$
WYZ281-142030-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
1230 PM MDT Sun Sep 13 2026
.THIS AFTERNOON...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....78-83.
24 hr trend......10 degrees warmer.
Min humidity........20-26 percent.
24 hr trend......6 percent drier.
20-foot winds.......South winds around 20 mph with gusts to around
35 mph.
Ridge top winds.....South around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 30 mph.
Mixing Height.......6600-8600 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms. Chance of
precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....49-54.
24 hr trend......6 degrees warmer.
Max humidity........74-80 percent.
24 hr trend......10 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Breezy. South winds 20 to 25 mph with gusts to
around 45 mph until 0300, then west with gusts
to around 35 mph.
Ridge top winds.....South around 25 mph until 2400, then southwest.
Chc of wetting rain.Zero percent.
Transport winds.....South 20 to 25 mph.
Mixing Height.......2200-4200 ft agl until 2400, then 600-1000 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.MONDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....64-69.
24 hr trend......14 degrees cooler.
Min humidity........20-26 percent.
24 hr trend......Unchanged.
20-foot winds.......North winds around 20 mph with gusts to around
35 mph.
Ridge top winds.....North around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 20 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.MONDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....40-45.
24 hr trend......11 degrees cooler.
Max humidity........64-70 percent.
24 hr trend......1 percent wetter.
Humidity recovery...Good.
20-foot winds.......North winds around 20 mph until 2400, then
around 10 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 35
mph.
Ridge top winds.....North around 25 mph until 2400, then northwest
around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 25 mph until 2400, then around 10
mph.
Mixing Height.......2400-4400 ft agl until 2400, then 400-1400 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....66-71.
24 hr trend......1 degree warmer.
Min humidity........24-30 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southeast 10 to 15 mph. Gusts up to 30 mph.
Ridge top winds.....South 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 15 to 20 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 4200-6000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good.
.Forecast days 3 through 7......
.TUESDAY THROUGH WEDNESDAY...Mostly clear. Lows 47 to 52. Highs
in the lower 70s. North winds around 10 mph.
.THURSDAY THROUGH FRIDAY...Partly cloudy with chance of showers
and slight chance of thunderstorms. Lows 48 to 53. Highs 73 to
78. Northwest winds around 10 mph.
.SATURDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the mid 40s. Highs in the lower 70s.
.SUNDAY...Mostly sunny. Slight chance of showers in the
afternoon. Highs in the mid 70s.
$$
WYZ282-142030-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
1230 PM MDT Sun Sep 13 2026
.THIS AFTERNOON...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....78-83.
24 hr trend......13 degrees warmer.
Min humidity........16-22 percent.
24 hr trend......9 percent drier.
20-foot winds.......Southwest winds around 15 mph with gusts to
around 25 mph.
Ridge top winds.....Southwest around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 25 mph.
Mixing Height.......8400-10400 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers in the
evening. Slight chance of thunderstorms through
the night. Chance of showers after midnight.
Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....45-50.
24 hr trend......4 degrees warmer.
Max humidity........65-71 percent.
24 hr trend......17 percent drier.
Humidity recovery...Good.
20-foot winds.......Southwest winds around 15 mph until 0300, then
northwest. Gusts up to 35 mph.
Ridge top winds.....Southwest around 15 mph until 2400, then
northwest.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 2400, then
northwest.
Mixing Height.......3600-5600 ft agl until 2400, then 600-800 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....62-67.
24 hr trend......16 degrees cooler.
Min humidity........18-24 percent.
24 hr trend......2 percent wetter.
20-foot winds.......North winds 15 to 20 mph with gusts to around
30 mph.
Ridge top winds.....North 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 15 to 20 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 5800-7800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.MONDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....37-42.
24 hr trend......9 degrees cooler.
Max humidity........60-66 percent.
24 hr trend......4 percent drier.
Humidity recovery...Good.
20-foot winds.......North 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.....North around 20 mph until 2400, then southwest
around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 20 mph until 2400, then west
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.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....67-72.
24 hr trend......3 degrees warmer.
Min humidity........18-24 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southeast around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southeast 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 4200-5600 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly clear. Lows in the upper 40s. East winds
around 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers. Lows in the
upper 40s. Highs in the lower 70s. Winds generally less than
10 mph.
.THURSDAY...Partly cloudy with chance of showers and slight
chance of thunderstorms. Lows in the lower 50s. Highs in the
upper 70s. Winds generally less than 10 mph.
.FRIDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the upper 40s. Highs in the mid 70s. Winds
generally less than 10 mph.
.SATURDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the lower 70s.
.SUNDAY...Mostly sunny. Highs in the mid 70s.
$$
WYZ275-142030-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
1230 PM MDT Sun Sep 13 2026
.THIS AFTERNOON...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....73-78.
24 hr trend......10 degrees warmer.
Min humidity........19-25 percent.
24 hr trend......8 percent drier.
20-foot winds.......South winds around 10 mph with higher gusts.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 20 mph.
Mixing Height.......4800-6800 ft agl.
Smoke dispersal.....Good.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms after midnight. Chance
of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....43-48.
24 hr trend......4 degrees warmer.
Max humidity........71-77 percent.
24 hr trend......18 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Breezy. West winds around 10 mph and gusty
until 2400, then northwest 20 to 25 mph with
gusts to around 40 mph.
Ridge top winds.....Northwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 2400, then
northwest.
Mixing Height.......1800-3800 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor.
.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....59-64.
24 hr trend......13 degrees cooler.
Min humidity........22-28 percent.
24 hr trend......1 percent drier.
20-foot winds.......Northwest winds around 20 mph with gusts to
around 35 mph.
Ridge top winds.....Northwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 15 to 20 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good.
.MONDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....36-41.
24 hr trend......8 degrees cooler.
Max humidity........61-67 percent.
24 hr trend......1 percent drier.
Humidity recovery...Good.
20-foot winds.......North winds 15 to 20 mph with gusts to around
30 mph until 2400, then northwest around 10 mph
and gusty 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.....Good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....63-68.
24 hr trend......2 degrees warmer.
Min humidity........19-25 percent.
24 hr trend......1 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.....Southeast 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 3800-5000 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.TUESDAY THROUGH WEDNESDAY...Mostly clear. Lows in the mid 40s.
Highs in the lower 70s. Northwest winds around 10 mph.
.THURSDAY THROUGH FRIDAY...Partly cloudy with chance of showers
and slight chance of thunderstorms. Lows 46 to 51. Highs 72 to
77. Winds generally less than 10 mph.
.SATURDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the lower 70s.
.SUNDAY...Mostly sunny. Highs in the mid 70s.
$$
WYZ276-142030-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
1230 PM MDT Sun Sep 13 2026
...HIGH WIND WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 2 PM MDT
MONDAY...
.THIS AFTERNOON...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....74-79.
24 hr trend......12 degrees warmer.
Min humidity........23-29 percent.
24 hr trend......13 percent drier.
20-foot winds.......South winds around 10 mph with gusts to around
25 mph.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 25 mph.
Mixing Height.......6800-8800 ft agl.
Smoke dispersal.....Very good to excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms after midnight. Chance
of precipitation 50 percent.
Chance of thunder...10 percent.
Min temperature.....44-49.
24 hr trend......3 degrees warmer.
Max humidity........58-64 percent.
24 hr trend......26 percent drier.
Humidity recovery...Good.
20-foot winds.......Breezy. West winds around 15 mph with gusts to
around 30 mph until 2400, then around 25 mph
with gusts to around 45 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 600-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....62-67.
24 hr trend......12 degrees cooler.
Min humidity........28-34 percent.
24 hr trend......3 percent drier.
20-foot winds.......Windy. West winds 25 to 30 mph with gusts to
around 50 mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 25 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 6000-8000 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.MONDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....38-43.
24 hr trend......8 degrees cooler.
Max humidity........54-60 percent.
24 hr trend......6 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......North winds 10 to 15 mph with gusts to around
30 mph until 2400, then downslope/downvalley
4-7 mph.
Ridge top winds.....North around 15 mph until 2400, then west.
Chc of wetting rain.Zero percent.
Transport winds.....North around 15 mph until 2400, then west.
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.....65-70.
24 hr trend......2 degrees warmer.
Min humidity........27-33 percent.
24 hr trend......3 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.....South around 10 mph until 1200, then east
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then around 20
mph.
Mixing Height.......800-2800 ft agl until 1200, then 3800-5800 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.TUESDAY THROUGH WEDNESDAY...Mostly clear. Lows in the mid 40s.
Highs in the mid 60s. North winds around 10 mph.
.THURSDAY THROUGH FRIDAY...Partly cloudy with chance of showers
and slight chance of thunderstorms. Lows 46 to 51. Highs 68 to
73. Winds generally less than 10 mph.
.SATURDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the mid 40s. Highs in the upper 60s.
.SUNDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the lower 70s.
$$
WYZ287-142030-
Owl Creek Mountains-
1230 PM MDT Sun Sep 13 2026
.THIS AFTERNOON...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....73-78.
24 hr trend......11 degrees warmer.
Min humidity........21-27 percent.
24 hr trend......11 percent drier.
20-foot winds.......Southwest winds around 15 mph with gusts to
around 25 mph.
Ridge top winds.....Southwest around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 25 mph.
Mixing Height.......8000-10000 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers after
midnight. Slight chance of thunderstorms after
midnight. Slight chance of showers after
midnight. Chance of precipitation 40 percent.
Chance of thunder...10 percent.
Min temperature.....45-50.
24 hr trend......3 degrees warmer.
Max humidity........49-55 percent.
24 hr trend......19 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Breezy. Southwest winds 15 to 20 mph until
0300, then west around 25 mph. Gusts up to 30
mph until 2400, then 45 mph.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......3200-5200 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good until 2400, then poor.
.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....61-66.
24 hr trend......13 degrees cooler.
Min humidity........18-24 percent.
24 hr trend......2 percent drier.
20-foot winds.......Breezy. West winds around 25 mph until 0900,
then north. Gusts up to 45 mph.
Ridge top winds.....West around 20 mph until 1200, then north.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.MONDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....37-42.
24 hr trend......9 degrees cooler.
Max humidity........53-59 percent.
24 hr trend......6 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......North winds 10 to 15 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 25
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.......2200-4200 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....63-68.
24 hr trend......1 degree warmer.
Min humidity........23-29 percent.
24 hr trend......2 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.....South around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph.
Mixing Height.......800-2800 ft agl until 1200, then 3200-5000 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly clear. Lows in the upper 40s. Winds
generally less than 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers. Lows in the
upper 40s. Highs in the upper 60s. North winds around 10 mph.
.THURSDAY...Partly cloudy with chance of showers and slight
chance of thunderstorms. Lows around 50. Highs in the upper 60s.
Winds generally less than 10 mph.
.FRIDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the mid 40s. Highs in the upper 60s. Winds
generally less than 10 mph.
.SATURDAY THROUGH SUNDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows in the mid 40s. Highs in the
upper 60s.
$$
WYZ286-142030-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
1230 PM MDT Sun Sep 13 2026
...HIGH WIND WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 2 PM MDT
MONDAY...
.THIS AFTERNOON...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....66-71.
24 hr trend......3 degrees warmer.
Min humidity........27-33 percent.
24 hr trend......Unchanged.
20-foot winds.......Southwest winds around 20 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 30 mph.
Mixing Height.......7600-9000 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers with possible
snow showers and thunderstorms likely after
midnight. No snow accumulation. Chance of
precipitation 70 percent.
Chance of thunder...10 percent.
Min temperature.....35-40.
24 hr trend......3 degrees cooler.
Max humidity........66-72 percent.
24 hr trend......18 percent drier.
Humidity recovery...Good.
20-foot winds.......Breezy. West winds 15 to 20 mph until 2400,
then around 25 mph. Gusts up to 30 mph until
2400, then 50 mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph.
Mixing Height.......3000-5000 ft agl until 2400, then 600-1000 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.MONDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....52-57.
24 hr trend......14 degrees cooler.
Min humidity........33-39 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Windy. West winds 25 to 30 mph with gusts to
around 55 mph.
Ridge top winds.....West around 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 30 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 4000-5800 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good.
.MONDAY NIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....32-37.
24 hr trend......5 degrees cooler.
Max humidity........66-72 percent.
24 hr trend......5 percent wetter.
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 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 2400, then southwest.
Mixing Height.......2000-4000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....57-62.
24 hr trend......7 degrees warmer.
Min humidity........28-34 percent.
24 hr trend......7 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
10 to 15 mph with gusts to around 30 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then around
20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then around
20 mph.
Mixing Height.......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......
.TUESDAY NIGHT...Mostly clear. Lows in the lower 40s. Winds
generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Slight chance of showers,
thunderstorms and snow showers. Lows in the lower 40s. Highs
around 60. Winds generally less than 10 mph.
.THURSDAY...Partly cloudy with showers likely and slight chance
of thunderstorms. Lows in the lower 40s. Highs in the lower 60s.
Winds generally less than 10 mph.
.FRIDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the upper 30s. Highs in the upper 50s.
Winds generally less than 10 mph.
.SATURDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the upper 30s. Highs in the upper 50s.
.SUNDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs around 60.
$$
WYZ140-142030-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
1230 PM MDT Sun Sep 13 2026
.THIS AFTERNOON...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....66-71.
24 hr trend......1 degree cooler.
Min humidity........27-33 percent.
24 hr trend......4 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.....Southwest around 35 mph.
Mixing Height.......6400-7800 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
snow showers in the evening. Slight chance of
thunderstorms through the night. Chance of
showers and snow showers after midnight. Chance
of precipitation 50 percent.
Chance of thunder...10 percent.
Min temperature.....31-36.
24 hr trend......9 degrees cooler.
Max humidity........77-83 percent.
24 hr trend......1 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds 15 to 20 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph.
Mixing Height.......2400-4400 ft agl until 2400, then 600-2200 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.MONDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....52-57.
24 hr trend......13 degrees cooler.
Min humidity........37-43 percent.
24 hr trend......6 percent wetter.
20-foot winds.......West winds 15 to 20 mph with gusts to around 30
mph.
Ridge top winds.....West around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 4600-6000 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good.
.MONDAY NIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....28-33.
24 hr trend......2 degrees cooler.
Max humidity........73-79 percent.
24 hr trend......2 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......West winds around 10 mph with gusts to around
25 mph until 2100, then downslope/downvalley
4-7 mph.
Ridge top winds.....Southwest 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 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....61-66.
24 hr trend......8 degrees warmer.
Min humidity........24-30 percent.
24 hr trend......12 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph with gusts to around 25
mph.
Ridge top winds.....Southeast around 10 mph until 1200, then
southwest.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly clear. Lows in the mid 30s. Winds
generally less than 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 30s. Highs in the mid 60s. Winds
generally less than 10 mph.
.THURSDAY...Partly cloudy with showers likely and slight chance
of thunderstorms. Lows in the upper 30s. Highs in the mid 60s.
Winds generally less than 10 mph.
.FRIDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the mid 30s. Highs in the upper 50s.
Winds generally less than 10 mph.
.SATURDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 30s. Highs around 60.
.SUNDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs in the lower 60s.
$$
WYZ415-142030-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
1230 PM MDT Sun Sep 13 2026
.THIS AFTERNOON...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....66-71.
24 hr trend......1 degree cooler.
Min humidity........31-37 percent.
24 hr trend......5 percent wetter.
20-foot winds.......Southwest winds around 15 mph with gusts to
around 25 mph.
Ridge top winds.....Southwest around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 30 mph.
Mixing Height.......7200-8400 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
snow showers in the evening. Chance of showers
and snow showers after midnight. Chance of
precipitation 50 percent.
Chance of thunder...0 percent.
Min temperature.....29-34.
24 hr trend......10 degrees cooler.
Max humidity........72-78 percent.
24 hr trend......3 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds around 10 mph until 2400, then
southwest 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 15 to 20 mph.
Mixing Height.......2800-4800 ft agl until 2400, then 600-1000 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.MONDAY...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....51-56.
24 hr trend......14 degrees cooler.
Min humidity........39-45 percent.
24 hr trend......2 percent wetter.
20-foot winds.......West winds 15 to 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 around 20 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 4200-5400 ft
agl.
Smoke dispersal.....Fair to good.
.MONDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....28-33.
24 hr trend......2 degrees cooler.
Max humidity........70-76 percent.
24 hr trend......1 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......West winds around 10 mph with gusts to around
25 mph until 2100, then downslope/downvalley
4-7 mph.
Ridge top winds.....Northwest around 10 mph until 2400, then east.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph until 2400, then east.
Mixing Height.......1600-3600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....62-67.
24 hr trend......9 degrees warmer.
Min humidity........25-31 percent.
24 hr trend......11 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph with gusts to around 25
mph.
Ridge top winds.....Southeast around 10 mph until 1200, then
southwest.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 5800-7800 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Mostly clear. Lows in the upper 30s. Winds
generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Slight chance of showers,
thunderstorms and snow showers. Lows in the lower 40s. Highs in
the mid 60s. Winds generally less than 10 mph.
.THURSDAY...Showers likely and chance of thunderstorms. Lows in
the upper 30s. Highs in the mid 60s. Winds generally less than
10 mph.
.FRIDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the mid 30s. Highs around 60. Winds
generally less than 10 mph.
.SATURDAY THROUGH SUNDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows in the mid 30s. Highs in the
lower 60s.
$$
WYZ416-142030-
West Wind River Mountains/East Zone Bridger Teton NF-
1230 PM MDT Sun Sep 13 2026
.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the evening. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....65-70.
24 hr trend......Unchanged.
Min humidity........27-33 percent.
24 hr trend......5 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.......7200-8400 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of snow showers in
the evening. Chance of showers and slight
chance of thunderstorms through the night.
Chance of snow showers after midnight. Chance
of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....30-35.
24 hr trend......11 degrees cooler.
Max humidity........75-81 percent.
24 hr trend......9 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......West winds 15 to 20 mph with gusts to around 35
mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.5 percent.
Transport winds.....West around 20 mph.
Mixing Height.......2800-4800 ft agl until 2400, then 600-800 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....51-56.
24 hr trend......14 degrees cooler.
Min humidity........30-36 percent.
24 hr trend......1 percent drier.
20-foot winds.......West winds around 20 mph with gusts to around
35 mph.
Ridge top winds.....West around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 3600-5200 ft
agl.
Smoke dispersal.....Fair to good.
.MONDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....29-34.
24 hr trend......2 degrees cooler.
Max humidity........62-68 percent.
24 hr trend......16 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.....Northwest around 15 mph until 2400, then
northeast.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph until 2400, then east.
Mixing Height.......1400-3400 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....58-63.
24 hr trend......6 degrees warmer.
Min humidity........28-34 percent.
24 hr trend......3 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest 10 to 15 mph with gusts to around 30
mph.
Ridge top winds.....South around 10 mph until 1200, then southwest.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Partly cloudy. Slight chance of showers after
midnight. Lows in the upper 30s. Winds generally less than
10 mph.
.WEDNESDAY...Partly cloudy. Chance of showers, slight chance of
thunderstorms and snow showers. Lows around 40. Highs in the
lower 60s. Southeast winds around 10 mph.
.THURSDAY...Partly cloudy with showers likely with possible
thunderstorms and snow showers. Lows in the upper 30s. Highs in
the upper 50s. Winds generally less than 10 mph.
.FRIDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the mid 30s. Highs in the mid 50s. Winds
generally less than 10 mph.
.SATURDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 30s. Highs in the upper 50s.
.SUNDAY...Mostly sunny. Highs in the upper 50s.
$$
WYZ288-142030-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
1230 PM MDT Sun Sep 13 2026
.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Slight chance of showers. Chance
of showers 20 percent.
Chance of thunder...0 percent.
Max temperature.....70-75.
24 hr trend......1 degree warmer.
Min humidity........23-29 percent.
24 hr trend......5 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.....Southwest around 35 mph.
Mixing Height.......7000-8200 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers early
in the evening. Slight chance of thunderstorms
in the evening. Chance of showers in the late
evening and early morning. Chance of
precipitation 50 percent.
Chance of thunder...10 percent.
Min temperature.....38-43.
24 hr trend......5 degrees cooler.
Max humidity........63-69 percent.
24 hr trend......1 percent drier.
Humidity recovery...Good.
20-foot winds.......Breezy. Southwest winds 20 to 25 mph. Gusts up
to 35 mph until 2400, then 45 mph.
Ridge top winds.....Southwest 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 25 mph.
Mixing Height.......2800-4800 ft agl until 2400, then 600-800 ft
agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....56-61.
24 hr trend......13 degrees cooler.
Min humidity........27-33 percent.
24 hr trend......4 percent drier.
20-foot winds.......Windy. West winds 30 to 35 mph with gusts to
around 55 mph until 1500, then around 25 mph
with gusts to around 50 mph.
Ridge top winds.....West around 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 30 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 3600-5200 ft
agl.
Smoke dispersal.....Fair to good until 1200, then good to very
good.
.MONDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....33-38.
24 hr trend......7 degrees cooler.
Max humidity........52-58 percent.
24 hr trend......5 percent drier.
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.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph until 2400, then east.
Mixing Height.......1800-3800 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....61-66.
24 hr trend......5 degrees warmer.
Min humidity........27-33 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest 10 to 15 mph with gusts to around 30
mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Partly cloudy. Slight chance of showers after
midnight. Lows in the mid 40s. Southwest winds around 10 mph.
.WEDNESDAY...Partly cloudy. Chance of showers, slight chance of
thunderstorms and snow showers. Lows in the lower 40s. Highs in
the mid 60s. Southwest winds around 10 mph.
.THURSDAY...Partly cloudy with showers likely, slight chance of
thunderstorms and snow showers. Lows in the lower 40s. Highs in
the lower 60s. Winds generally less than 10 mph.
.FRIDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the upper 30s. Highs around 60. Winds
generally less than 10 mph.
.SATURDAY THROUGH SUNDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows in the upper 30s. Highs in the
lower 60s.
$$
WYZ414-142030-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
1230 PM MDT Sun Sep 13 2026
.THIS AFTERNOON...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....66-71.
24 hr trend......1 degree cooler.
Min humidity........27-33 percent.
24 hr trend......6 percent wetter.
20-foot winds.......Southwest winds around 15 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 30 mph.
Mixing Height.......7600-8400 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
snow showers after midnight. Chance of
precipitation 20 percent.
Chance of thunder...0 percent.
Min temperature.....30-35.
24 hr trend......12 degrees cooler.
Max humidity........72-78 percent.
24 hr trend......5 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds 15 to 20 mph with gusts to around 35
mph.
Ridge top winds.....Northwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph.
Mixing Height.......3000-5000 ft agl until 2400, then 600-800 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....52-57.
24 hr trend......14 degrees cooler.
Min humidity........27-33 percent.
24 hr trend......1 percent drier.
20-foot winds.......West winds 15 to 20 mph with gusts to around 35
mph.
Ridge top winds.....West around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 3600-5200 ft
agl.
Smoke dispersal.....Fair to good.
.MONDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....28-33.
24 hr trend......2 degrees cooler.
Max humidity........70-76 percent.
24 hr trend......1 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 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 east.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph until 2400, then
southeast.
Mixing Height.......1400-3400 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....62-67.
24 hr trend......9 degrees warmer.
Min humidity........21-27 percent.
24 hr trend......7 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest 10 to 15 mph with gusts to around 30
mph.
Ridge top winds.....Southeast around 10 mph until 1200, then
southwest.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 6400-8400 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Not as cool. Partly cloudy. Lows in the lower
40s. Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Chance of showers, slight chance of
thunderstorms and snow showers. Lows in the mid 40s. Highs in the
upper 60s. South winds around 10 mph.
.THURSDAY...Partly cloudy with showers likely and chance of
thunderstorms. Lows around 40. Highs in the mid 60s. Winds
generally less than 10 mph.
.FRIDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the upper 30s. Highs in the lower 60s.
Winds generally less than 10 mph.
.SATURDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 30s. Highs in the lower 60s.
.SUNDAY...Mostly sunny. Highs in the mid 60s.
$$
WYZ278-142030-
Upper Green River Basin/Rock Springs BLM-
Including the cities of Big Piney, Farson, and Pinedale
1230 PM MDT Sun Sep 13 2026
.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms. Chance of precipitation 20
percent.
Chance of thunder...10 percent.
Max temperature.....70-75.
24 hr trend......Unchanged.
Min humidity........22-28 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Southwest winds around 20 mph with gusts to
around 35 mph.
Ridge top winds.....Southwest around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 30 mph.
Mixing Height.......8800-9800 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of thunderstorms
in the evening. Slight chance of showers until
early morning. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Min temperature.....32-37.
24 hr trend......7 degrees cooler.
Max humidity........64-70 percent.
24 hr trend......2 percent drier.
Humidity recovery...Good.
20-foot winds.......West winds 15 to 20 mph until 0300, then
northwest. Gusts up to 35 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph until 2400, then
northwest.
Mixing Height.......3400-5400 ft agl until 2400, then 600-800 ft
agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....57-62.
24 hr trend......13 degrees cooler.
Min humidity........21-27 percent.
24 hr trend......5 percent drier.
20-foot winds.......West winds around 20 mph with gusts to around
35 mph.
Ridge top winds.....West around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 4400-6400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.MONDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....31-36.
24 hr trend......6 degrees cooler.
Max humidity........66-72 percent.
24 hr trend......6 percent wetter.
Humidity recovery...Good.
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.....North 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North 10 to 15 mph.
Mixing Height.......2200-4200 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....64-69.
24 hr trend......6 degrees warmer.
Min humidity........19-25 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
around 10 mph with gusts to around 25 mph.
Ridge top winds.....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.......600-2600 ft agl until 1200, then 5000-7000 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Partly cloudy. Slight chance of showers after
midnight. Lows in the lower 40s. Winds generally less than
10 mph.
.WEDNESDAY THROUGH THURSDAY...Partly cloudy with chance of
showers and slight chance of thunderstorms. Lows 39 to 44. Highs
68 to 73. South winds around 10 mph.
.FRIDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the mid 30s. Highs in the upper 60s. Winds
generally less than 10 mph.
.SATURDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 30s. Highs in the upper 60s.
.SUNDAY...Mostly sunny. Highs in the upper 60s.
$$
WYZ277-142030-
Lincoln and Uinta Counties/Lower Elevations-
Including the cities of Evanston, Fort Bridger, and Kemmerer
1230 PM MDT Sun Sep 13 2026
.THIS AFTERNOON...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....72-77.
24 hr trend......1 degree cooler.
Min humidity........23-29 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Breezy. Southwest winds around 25 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.......8600-9400 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....34-39.
24 hr trend......11 degrees cooler.
Max humidity........64-70 percent.
24 hr trend......6 percent drier.
Humidity recovery...Good.
20-foot winds.......Breezy. West winds 15 to 20 mph with gusts to
around 30 mph until 2400, then northwest 20 to
25 mph with gusts to around 35 mph.
Ridge top winds.....Northwest 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 20 to 25 mph.
Mixing Height.......3400-5400 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....59-64.
24 hr trend......13 degrees cooler.
Min humidity........16-22 percent.
24 hr trend......7 percent drier.
20-foot winds.......West winds 15 to 20 mph with gusts to around 35
mph.
Ridge top winds.....West around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 4000-6000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.MONDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....31-36.
24 hr trend......5 degrees cooler.
Max humidity........63-69 percent.
24 hr trend......3 percent wetter.
Humidity recovery...Good.
20-foot winds.......Northwest winds around 15 mph with gusts to
around 25 mph until 2100, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest around 15 mph until 2400, then north.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph until 2400, then
northeast.
Mixing Height.......1800-3800 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....67-72.
24 hr trend......8 degrees warmer.
Min humidity........19-25 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
around 10 mph with gusts to around 25 mph until
1500, then southwest 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.....East around 10 mph until 1200, then southwest
around 20 mph.
Mixing Height.......800-2800 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Partly cloudy. Slight chance of showers and
thunderstorms after midnight. Lows in the lower 40s. Winds
generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Chance of showers and slight chance
of thunderstorms. Lows in the mid 40s. Highs in the lower 70s.
South winds around 10 mph.
.THURSDAY...Partly cloudy with chance of showers and
thunderstorms. Lows around 40. Highs in the upper 60s. Winds
generally less than 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 30s. Highs in the upper 60s.
Winds generally less than 10 mph.
.SATURDAY...Clear. Lows in the upper 30s. Highs in the upper 60s.
.SUNDAY...Mostly sunny. Highs in the upper 60s.
$$
WYZ279-142030-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Including the cities of Green River, Rock Springs, and Wamsutter
1230 PM MDT Sun Sep 13 2026
...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT MONDAY...
.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms. Chance of precipitation 20
percent.
Chance of thunder...10 percent.
Max temperature.....74-79.
24 hr trend......Unchanged.
Min humidity........23-29 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Breezy. Southwest winds around 25 mph with
gusts to around 35 mph.
Ridge top winds.....Southwest around 30 mph.
Chc of wetting rain.5 percent.
Transport winds.....Southwest around 30 mph.
Mixing Height.......8200-10000 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers early in the
evening. Slight chance of thunderstorms until
early morning. Slight chance of showers in the
late evening and early morning. Chance of
precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....44-49.
24 hr trend......6 degrees cooler.
Max humidity........67-73 percent.
24 hr trend......Unchanged.
Humidity recovery...Good.
20-foot winds.......Breezy. Southwest winds 20 to 25 mph with gusts
to around 40 mph.
Ridge top winds.....Southwest around 25 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest around 25 mph.
Mixing Height.......3000-5000 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.MONDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....65-70.
24 hr trend......12 degrees cooler.
Min humidity........20-26 percent.
24 hr trend......7 percent drier.
20-foot winds.......Breezy. West winds 20 to 25 mph with gusts to
around 35 mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 25 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 4200-6200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.MONDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....40-45.
24 hr trend......7 degrees cooler.
Max humidity........53-59 percent.
24 hr trend......14 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Northwest 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 north.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph until 2400, then
northeast.
Mixing Height.......2000-4000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.TUESDAY...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Max temperature.....68-73.
24 hr trend......4 degrees warmer.
Min humidity........30-36 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest 10 to 15 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.....East around 10 mph until 1200, then southwest.
Mixing Height.......1200-3200 ft agl until 1200, then 6000-8000 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.TUESDAY THROUGH WEDNESDAY...Partly cloudy with chance of showers
and slight chance of thunderstorms. Lows in the upper 40s. Highs
in the mid 70s. South winds around 10 mph.
.THURSDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the lower 70s. South
winds around 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the upper 60s.
Winds generally less than 10 mph.
.SATURDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the upper 60s.
.SUNDAY...Mostly sunny. Highs around 70.
$$
WYZ289-142030-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
1230 PM MDT Sun Sep 13 2026
...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT MONDAY...
.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Slight chance of showers. Chance
of showers 20 percent.
Chance of thunder...0 percent.
Max temperature.....78-83.
24 hr trend......2 degrees warmer.
Min humidity........19-25 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Southwest winds around 20 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest around 25 mph.
Chc of wetting rain.5 percent.
Transport winds.....Southwest around 30 mph.
Mixing Height.......8400-10400 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers early in the
evening. Slight chance of thunderstorms in the
evening. Slight chance of showers late in the
evening. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....46-51.
24 hr trend......2 degrees warmer.
Max humidity........64-70 percent.
24 hr trend......4 percent drier.
Humidity recovery...Good.
20-foot winds.......Breezy. Southwest winds 20 to 25 mph with gusts
to around 40 mph.
Ridge top winds.....Southwest 20 to 25 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest 20 to 25 mph.
Mixing Height.......3000-5000 ft agl until 2400, then 600 ft agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....64-69.
24 hr trend......14 degrees cooler.
Min humidity........12-18 percent.
24 hr trend......6 percent drier.
20-foot winds.......Windy. West winds 25 to 30 mph with gusts to
around 50 mph.
Ridge top winds.....West around 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 30 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 4400-6400 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.MONDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....37-42.
24 hr trend......11 degrees cooler.
Max humidity........57-63 percent.
24 hr trend......5 percent drier.
Humidity recovery...Good.
20-foot winds.......West winds around 15 mph with gusts to around
40 mph until 2100, then north with gusts to
around 40 mph until 0300, 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 around 20 mph until 2400, then
northeast.
Mixing Height.......2200-4200 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.TUESDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....68-73.
24 hr trend......4 degrees warmer.
Min humidity........23-29 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
10 to 15 mph with gusts to around 30 mph.
Ridge top winds.....East around 10 mph until 1200, then southwest.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 10 mph until 1200, then
southwest around 20 mph.
Mixing Height.......600-2600 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.TUESDAY NIGHT...Partly cloudy. Slight chance of showers and
thunderstorms in the evening, then slight chance of showers after
midnight. Lows in the upper 40s. South winds around 10 mph.
.WEDNESDAY THROUGH THURSDAY...Partly cloudy with chance of
showers and slight chance of thunderstorms. Lows in the mid 40s.
Highs 69 to 74. South winds around 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the upper 60s.
West winds around 10 mph.
.SATURDAY THROUGH SUNDAY...Mostly clear. Lows in the lower 40s.
Highs 67 to 72.
$$
WYZ300-142030-
Casper Mountain-
1230 PM MDT Sun Sep 13 2026
...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT MONDAY...
.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the evening. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....77-82.
24 hr trend......6 degrees warmer.
Min humidity........23-29 percent.
24 hr trend......Unchanged.
20-foot winds.......Southwest winds around 20 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest around 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 30 mph.
Mixing Height.......10000-11000 ft agl.
Smoke dispersal.....Excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Showers and chance of
thunderstorms in the evening, then showers
likely and slight chance of thunderstorms after
midnight. Chance of precipitation 90 percent.
Chance of thunder...30 percent.
Min temperature.....53-58.
24 hr trend......6 degrees warmer.
Max humidity........71-77 percent.
24 hr trend......5 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Breezy. Southwest winds 20 to 25 mph. Gusts up
to 30 mph until 2400, then 50 mph.
Ridge top winds.....Southwest 20 to 25 mph.
Chc of wetting rain.20 percent until 2400, then 5 percent.
Transport winds.....Southwest around 25 mph.
Mixing Height.......3600-5600 ft agl until 2400, then 600-800 ft
agl.
Smoke dispersal.....Very good until 2400, then poor.
.MONDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....65-70.
24 hr trend......13 degrees cooler.
Min humidity........14-20 percent.
24 hr trend......10 percent drier.
20-foot winds.......Windy. West winds 25 to 30 mph. Gusts up to 50
mph until 1200, then 40 mph.
Ridge top winds.....West around 30 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 30 to 35 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 5800-7200 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.MONDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....39-44.
24 hr trend......15 degrees cooler.
Max humidity........56-62 percent.
24 hr trend......16 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds around 15 mph with gusts to around
40 mph until 2100, then northeast with gusts to
around 40 mph until 0300, then
downslope/downvalley 4-7 mph.
Ridge top winds.....North around 15 mph until 2400, then east.
Chc of wetting rain.Zero percent.
Transport winds.....North around 15 mph until 2400, then east.
Mixing Height.......2600-4600 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.....66-71.
24 hr trend......1 degree warmer.
Min humidity........30-36 percent.
24 hr trend......13 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southeast around 15 mph until 1200, then
southwest.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 15 mph until 1200, then
southwest.
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......
.TUESDAY THROUGH THURSDAY...Partly cloudy with chance of showers
and slight chance of thunderstorms. Lows 47 to 52. Highs 67 to
72. South winds 10 to 15 mph.
.FRIDAY...Mostly clear. Chance of showers. Lows in the mid 40s.
Highs in the upper 60s. West winds around 10 mph.
.SATURDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the mid 60s.
.SUNDAY...Mostly sunny. Highs in the upper 60s.
$$