Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
523
FNUS55 KRIW 301845
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
1245 PM MDT Sat Aug 30 2025
.DISCUSSION...
...Yellowstone NP and Teton dispatch areas (includes fire weather
zones 140...414...415...and 416)...
Cool temperatures today, with minimum RHs generally 20 to 40
percent, slightly lower for southern zone 414. No precipitation
expected today. Drier and warmer air moves in for Sunday, with
temperatures trending a few degrees warmer and RHs trending up to 10
percent drier. No precipitation expected the next couple days.
...Cody dispatch area (includes fire weather zones 275...276...
282...283...285...286...287...288...and 289)...
Minimum RHs today generally around 30 percent. Showers and
thunderstorms are possible through midnight, though will begin
decreasing around 1800L. Lightning is the main hazard with storms. A
wetting rain is unlikely (10%) for the lower elevations and basins,
with better chances for the mountains, especially zone 285. Drier
and warmer air moves in for Sunday, with temperatures trending
around 5 degrees warmer and RHs trending 10 to 15 percent drier.
Outside a very isolated mountain shower, no precipitation expected
the next couple days.
...Casper dispatch area (includes fire weather zones 277...278...
279...280...281...285...289...and 300)...
Minimum RHs today generally around 20 percent west of the Divide and
30 to 45 percent east of the Divide. Showers and thunderstorms are
possible through midnight for zones 280, 281, 285, 289, and 300.
Lightning is the main hazard with storms, though heavy rain is
possible for zones 281 and 285. Drier and warmer air moves in for
Sunday, with the largest changes for zones east of the Divide, where
highs trend 4 to 10 degrees warmer and RHs trend 10 to 20 percent
drier. No precipitation expected the next couple days.
...Thunderstorms imply strong gusty and erratic winds...
WYZ280-312045-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
1245 PM MDT Sat Aug 30 2025
.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Scattered showers and
thunderstorms early in the evening, then
isolated showers and thunderstorms early in the
evening. Chance of precipitation 50 percent.
Chance of thunder...40 percent.
Max temperature.....68-73.
24 hr trend......3 degrees cooler.
Min humidity........41-47 percent.
24 hr trend......8 percent wetter.
20-foot winds.......North winds around 10 mph with higher gusts.
Ridge top winds.....North around 15 mph.
Chc of wetting rain.15 percent.
Transport winds.....North around 15 mph.
Mixing Height.......4600-6400 ft agl.
Smoke dispersal.....Good.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated showers and
thunderstorms early in the evening. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....50-55.
24 hr trend......3 degrees cooler.
Max humidity........78-84 percent.
24 hr trend......9 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northeast winds around 10 mph and gusty until
2100, then downslope/downvalley 4-7 mph.
Ridge top winds.....Northeast around 10 mph until 2400, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 10 mph until 2400, then west.
Mixing Height.......1600-3600 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....74-79.
24 hr trend......6 degrees warmer.
Min humidity........24-30 percent.
24 hr trend......17 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
northwest around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.SUNDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....49-54.
24 hr trend......Unchanged.
Max humidity........59-65 percent.
24 hr trend......20 percent drier.
Humidity recovery...Good.
20-foot winds.......North winds around 10 mph and gusty until 2100,
then downslope/downvalley 4-7 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 south.
Mixing Height.......3400-5400 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.LABOR DAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....77-82.
24 hr trend......3 degrees warmer.
Min humidity........21-27 percent.
24 hr trend......3 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then north
around 10 mph with higher gusts.
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.......2000-4000 ft agl until 1200, then 7600-9600 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.LABOR DAY THROUGH TUESDAY...Mostly clear. Lows 48 to 53. Highs
around 80. Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the lower 70s.
Northeast winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the upper 40s. Highs in the mid
70s. Northwest winds around 10 mph.
.FRIDAY THROUGH SATURDAY...Mostly clear. Lows around 50. Highs
79 to 84.
$$
WYZ283-312045-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
1245 PM MDT Sat Aug 30 2025
.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Isolated showers and
thunderstorms. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....70-75.
24 hr trend......1 degree cooler.
Min humidity........35-41 percent.
24 hr trend......6 percent wetter.
20-foot winds.......Northeast winds around 10 mph and gusty.
Ridge top winds.....Northeast around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 15 mph.
Mixing Height.......6800-8600 ft agl.
Smoke dispersal.....Good to very good.
.TONIGHT...
Sky/weather.........Mostly clear. Isolated showers and
thunderstorms early in the evening. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....48-53.
24 hr trend......1 degree cooler.
Max humidity........68-74 percent.
24 hr trend......13 percent drier.
Humidity recovery...Good.
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 15 mph until 2400, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 15 mph until 2400, then west.
Mixing Height.......2600-4600 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor to fair until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny. Patchy smoke early in the
afternoon.
Chance of thunder...0 percent.
Max temperature.....75-80.
24 hr trend......4 degrees warmer.
Min humidity........23-29 percent.
24 hr trend......12 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.....West around 10 mph until 1200, then northeast.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.SUNDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....48-53.
24 hr trend......Unchanged.
Max humidity........54-60 percent.
24 hr trend......17 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....East around 10 mph until 2400, then southwest.
Chc of wetting rain.Zero percent.
Transport winds.....East around 10 mph until 2400, then south.
Mixing Height.......3000-5000 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.LABOR DAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....77-82.
24 hr trend......3 degrees warmer.
Min humidity........22-28 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then
northeast.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 6000-8000 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.LABOR DAY THROUGH TUESDAY...Mostly clear. Lows in the lower 50s.
Highs in the lower 80s. Winds generally less than 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the upper 70s.
Northeast winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the upper 40s. Highs in the
upper 70s. Winds generally less than 10 mph.
.FRIDAY THROUGH SATURDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows in the lower 50s. Highs 79 to 84.
$$
WYZ285-312045-
South Bighorn Mountains-
1245 PM MDT Sat Aug 30 2025
.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Scattered showers and
thunderstorms early in the evening, then
isolated showers and thunderstorms early in the
evening. Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....64-69.
24 hr trend......1 degree cooler.
Min humidity........44-50 percent.
24 hr trend......2 percent wetter.
20-foot winds.......North winds around 10 mph with higher gusts.
Ridge top winds.....North around 15 mph.
Chc of wetting rain.10 percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......4800-6400 ft agl.
Smoke dispersal.....Good.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated showers and
thunderstorms early in the evening. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....48-53.
24 hr trend......Unchanged.
Max humidity........71-77 percent.
24 hr trend......20 percent drier.
Humidity recovery...Excellent.
20-foot winds.......North winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph until 0300, then
west around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 15 mph until 2400, then west.
Mixing Height.......1800-3800 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Sunny then becoming partly cloudy. Isolated
showers and thunderstorms early in the
afternoon. Chance of precipitation 20 percent.
Chance of thunder...0 percent.
Max temperature.....69-74.
24 hr trend......5 degrees warmer.
Min humidity........28-34 percent.
24 hr trend......15 percent drier.
20-foot winds.......Northwest winds 10 to 15 mph with higher gusts.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.SUNDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....49-54.
24 hr trend......1 degree warmer.
Max humidity........51-57 percent.
24 hr trend......18 percent drier.
Humidity recovery...Moderate.
20-foot winds.......North 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 south.
Mixing Height.......2200-4200 ft agl until 2400, then 200-400 ft
agl.
Smoke dispersal.....Poor.
.LABOR DAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....72-77.
24 hr trend......3 degrees warmer.
Min humidity........23-29 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then north
around 10 mph. 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 around 10 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.LABOR DAY THROUGH TUESDAY...Mostly clear. Lows 48 to 53. Highs
in the mid 70s. North winds around 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the upper 60s.
North winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the upper 40s. Highs in the
upper 60s. Northwest winds around 10 mph.
.FRIDAY THROUGH SATURDAY...Mostly clear. Lows in the lower 50s.
Highs 72 to 77.
$$
WYZ281-312045-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
1245 PM MDT Sat Aug 30 2025
.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Scattered showers and
thunderstorms. Chance of precipitation 50
percent.
Chance of thunder...40 percent.
Max temperature.....66-71.
24 hr trend......1 degree cooler.
Min humidity........49-55 percent.
24 hr trend......1 percent drier.
20-foot winds.......North winds around 15 mph with gusts to around
25 mph.
Ridge top winds.....North around 20 mph.
Chc of wetting rain.25 percent.
Transport winds.....North around 20 mph.
Mixing Height.......3600-5600 ft agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated showers and
thunderstorms early in the evening. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....51-56.
24 hr trend......Unchanged.
Max humidity........79-85 percent.
24 hr trend......6 percent drier.
Humidity recovery...Excellent.
20-foot winds.......North 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.....North around 10 mph until 2400, then west.
Mixing Height.......1000-3000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....73-78.
24 hr trend......7 degrees warmer.
Min humidity........30-36 percent.
24 hr trend......19 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then north
10 to 15 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.....Northwest around 10 mph until 1200, then north
around 20 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.SUNDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....52-57.
24 hr trend......1 degree warmer.
Max humidity........57-63 percent.
24 hr trend......20 percent drier.
Humidity recovery...Good.
20-foot winds.......North winds around 10 mph and gusty until 2100,
then downslope/downvalley 4-7 mph.
Ridge top winds.....North around 10 mph until 2400, then southwest.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph until 2400, then southwest.
Mixing Height.......3200-5200 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.LABOR DAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....76-81.
24 hr trend......3 degrees warmer.
Min humidity........24-30 percent.
24 hr trend......5 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, 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.....West around 10 mph until 1200, then north.
Mixing Height.......2200-4200 ft agl until 1200, then 8000-10000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.Forecast days 3 through 7......
.LABOR DAY THROUGH TUESDAY...Mostly clear. Lows 50 to 55. Highs
in the lower 80s. North winds around 10 mph.
.WEDNESDAY...Not as warm. Partly cloudy with slight chance of
showers and thunderstorms. Lows in the mid 40s. Highs around 70.
North winds around 10 mph.
.THURSDAY...Partly cloudy. Lows in the upper 40s. Highs in the
mid 70s. Northwest winds around 10 mph.
.FRIDAY...Mostly clear. Lows in the lower 50s. Highs in the upper
70s.
.SATURDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the lower 80s.
$$
WYZ282-312045-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
1245 PM MDT Sat Aug 30 2025
.THIS AFTERNOON...
Sky/weather.........Mostly sunny. Isolated showers and
thunderstorms. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....68-73.
24 hr trend......1 degree cooler.
Min humidity........32-38 percent.
24 hr trend......1 percent wetter.
20-foot winds.......North winds around 10 mph and gusty.
Ridge top winds.....North around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 15 mph.
Mixing Height.......7400-8200 ft agl.
Smoke dispersal.....Good to very good.
.TONIGHT...
Sky/weather.........Mostly clear. Isolated showers and
thunderstorms early in the evening. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....48-53.
24 hr trend......2 degrees cooler.
Max humidity........65-71 percent.
24 hr trend......19 percent drier.
Humidity recovery...Good.
20-foot winds.......Northwest winds around 10 mph until 2400, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Northwest around 15 mph until 2400, then
southwest.
Chc of wetting rain.Zero percent.
Transport winds.....North around 15 mph until 2400, then southwest.
Mixing Height.......3000-5000 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....73-78.
24 hr trend......5 degrees warmer.
Min humidity........23-29 percent.
24 hr trend......11 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then north
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph until 1200, then northwest.
Mixing Height.......1600-3600 ft agl until 1200, then 6400-8400 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.SUNDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....49-54.
24 hr trend......1 degree cooler.
Max humidity........50-56 percent.
24 hr trend......15 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....East around 10 mph until 2400, then south.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 10 mph until 2400, then south.
Mixing Height.......3000-5000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor to fair.
.LABOR DAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....76-81.
24 hr trend......3 degrees warmer.
Min humidity........20-26 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then north
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then north.
Mixing Height.......1400-3400 ft agl until 1200, then 6400-8400 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.LABOR DAY THROUGH TUESDAY...Mostly clear. Lows in the mid 50s.
Highs in the mid 80s. Northwest winds around 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows around 50. Highs in the upper 70s. Northwest
winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the lower 50s. Highs in the
upper 70s. Northwest winds around 10 mph.
.FRIDAY...Mostly clear. Lows in the lower 50s. Highs in the lower
80s.
.SATURDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 80s.
$$
WYZ275-312045-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
1245 PM MDT Sat Aug 30 2025
.THIS AFTERNOON...
Sky/weather.........Mostly sunny. Isolated showers and
thunderstorms. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....66-71.
24 hr trend......Unchanged.
Min humidity........36-42 percent.
24 hr trend......1 percent drier.
20-foot winds.......North winds around 10 mph with higher gusts.
Ridge top winds.....North around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......7600-8800 ft agl.
Smoke dispersal.....Very good.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....48-53.
24 hr trend......4 degrees cooler.
Max humidity........64-70 percent.
24 hr trend......11 percent drier.
Humidity recovery...Good.
20-foot winds.......North winds around 10 mph and gusty until 2100,
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 northwest.
Mixing Height.......3000-5000 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....72-77.
24 hr trend......5 degrees warmer.
Min humidity........23-29 percent.
24 hr trend......10 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then north
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....South 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.......1400-3400 ft agl until 1200, then 6000-8000 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.SUNDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....49-54.
24 hr trend......Unchanged.
Max humidity........48-54 percent.
24 hr trend......15 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....North around 10 mph until 2400, then south.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 10 mph until 2400, then
southeast.
Mixing Height.......3200-5200 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor to fair until 2400, then poor.
.LABOR DAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....75-80.
24 hr trend......3 degrees warmer.
Min humidity........20-26 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then north
around 10 mph with higher gusts.
Ridge top winds.....Southwest around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then north.
Mixing Height.......1200-3200 ft agl until 1200, then 5800-7800 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.LABOR DAY THROUGH TUESDAY...Mostly clear. Lows in the mid 50s.
Highs in the mid 80s. North winds around 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows around 50. Highs in the upper 70s. North
winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the lower 50s. Highs around 80.
North winds around 10 mph.
.FRIDAY...Mostly clear. Lows in the lower 50s. Highs in the lower
80s.
.SATURDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 80s.
$$
WYZ276-312045-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
1245 PM MDT Sat Aug 30 2025
.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Scattered showers and
thunderstorms early in the evening, then
isolated showers and thunderstorms early in the
evening. Chance of precipitation 40 percent.
Chance of thunder...30 percent.
Max temperature.....69-74.
24 hr trend......1 degree cooler.
Min humidity........35-41 percent.
24 hr trend......1 percent wetter.
20-foot winds.......North winds around 10 mph and gusty.
Ridge top winds.....North around 15 mph.
Chc of wetting rain.5 percent.
Transport winds.....North around 15 mph.
Mixing Height.......6400-8000 ft agl.
Smoke dispersal.....Good.
.TONIGHT...
Sky/weather.........Mostly clear. Isolated showers and
thunderstorms early in the evening. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....51-56.
24 hr trend......Unchanged.
Max humidity........55-61 percent.
24 hr trend......24 percent drier.
Humidity recovery...Moderate.
20-foot winds.......North winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph until 0300, then
west around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Northwest around 10 mph until 2400, then west.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph until 2400, then west.
Mixing Height.......2400-4400 ft agl until 2400, then 600-1000 ft
agl.
Smoke dispersal.....Poor to fair.
.SUNDAY...
Sky/weather.........Mostly sunny. Patchy smoke in the late morning
and early afternoon.
Chance of thunder...0 percent.
Max temperature.....75-80.
24 hr trend......6 degrees warmer.
Min humidity........24-30 percent.
24 hr trend......14 percent drier.
20-foot winds.......West winds around 10 mph until 0900, then
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.....West around 10 mph until 1200, then north.
Mixing Height.......2400-4400 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.SUNDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....52-57.
24 hr trend......1 degree warmer.
Max humidity........43-49 percent.
24 hr trend......13 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.....North 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.......3000-5000 ft agl until 2400, then 600-1000 ft
agl.
Smoke dispersal.....Poor to fair until 2400, then poor.
.LABOR DAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....76-81.
24 hr trend......2 degrees warmer.
Min humidity........23-29 percent.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northeast around 10 mph with higher gusts.
Ridge top winds.....West around 10 mph until 1200, then northeast.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then
northeast.
Mixing Height.......2000-4000 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the mid 50s. Winds
generally less than 10 mph.
.TUESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs around 80. Northwest
winds around 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows around 50. Highs in the lower 70s. North
winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the lower 50s. Highs in the mid
70s. Northwest winds around 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the upper 70s.
.SATURDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms in the afternoon. Highs around 80.
$$
WYZ287-312045-
Owl Creek Mountains-
1245 PM MDT Sat Aug 30 2025
.THIS AFTERNOON...
Sky/weather.........Mostly sunny. Isolated showers and
thunderstorms early in the evening, then
scattered showers and thunderstorms early in
the evening. Chance of precipitation 40
percent.
Chance of thunder...30 percent.
Max temperature.....65-70.
24 hr trend......1 degree cooler.
Min humidity........40-46 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Northeast winds around 10 mph and gusty.
Ridge top winds.....Northeast around 15 mph.
Chc of wetting rain.15 percent.
Transport winds.....North around 15 mph.
Mixing Height.......5600-7400 ft agl.
Smoke dispersal.....Good.
.TONIGHT...
Sky/weather.........Mostly clear. Isolated showers and
thunderstorms early in the evening. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....49-54.
24 hr trend......2 degrees warmer.
Max humidity........60-66 percent.
24 hr trend......26 percent drier.
Humidity recovery...Good.
20-foot winds.......North winds around 10 mph until 2100, then
west. Gusts up to 15 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.......2200-4200 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....70-75.
24 hr trend......5 degrees warmer.
Min humidity........24-30 percent.
24 hr trend......14 percent drier.
20-foot winds.......West winds around 10 mph until 0900, then
upslope/upvalley 5-9 mph until 1500, 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.....Northwest 10 to 15 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.SUNDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....50-55.
24 hr trend......1 degree warmer.
Max humidity........44-50 percent.
24 hr trend......16 percent drier.
Humidity recovery...Moderate.
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.....Northeast around 10 mph until 2400, then
southwest.
Mixing Height.......2800-4800 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Poor.
.LABOR DAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....72-77.
24 hr trend......2 degrees warmer.
Min humidity........22-28 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then east
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then east.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then north.
Mixing Height.......1200-3200 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the mid 50s. Northwest
winds around 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows 49 to 54. Highs 72 to 77. North
winds around 10 mph.
.THURSDAY...Mostly clear. Lows around 50. Highs in the lower 70s.
North winds around 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the mid 70s.
.SATURDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 70s.
$$
WYZ286-312045-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
1245 PM MDT Sat Aug 30 2025
.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Scattered showers and
thunderstorms. Chance of precipitation 50
percent.
Chance of thunder...30 percent.
Max temperature.....62-67.
24 hr trend......Unchanged.
Min humidity........38-44 percent.
24 hr trend......1 percent drier.
20-foot winds.......Northwest winds around 10 mph with higher
gusts.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.5 percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......6800-8800 ft agl.
Smoke dispersal.....Very good.
.TONIGHT...
Sky/weather.........Mostly clear. Isolated showers and
thunderstorms early in the evening. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....45-50.
24 hr trend......2 degrees warmer.
Max humidity........64-70 percent.
24 hr trend......27 percent drier.
Humidity recovery...Good.
20-foot winds.......Northwest winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph until 0300, then
northwest around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Northwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......3000-5000 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Patchy smoke through the day.
Chance of thunder...0 percent.
Max temperature.....67-72.
24 hr trend......5 degrees warmer.
Min humidity........25-31 percent.
24 hr trend......12 percent drier.
20-foot winds.......Northwest winds around 10 mph until 0900, then
upslope/upvalley 5-9 mph until 1200, then north
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.SUNDAY NIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....46-51.
24 hr trend......2 degrees warmer.
Max humidity........50-56 percent.
24 hr trend......10 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Northeast winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 20
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 southwest.
Mixing Height.......3200-5200 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.LABOR DAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...10 percent.
Max temperature.....68-73.
24 hr trend......1 degree warmer.
Min humidity........25-31 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then east
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....West around 10 mph until 1200, then east.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the upper 40s. Winds
generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows in the mid 40s. Highs 65 to 70.
Northwest winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the mid 40s. Highs in the upper
60s. Northwest winds around 10 mph.
.FRIDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the upper 60s.
.SATURDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms in the afternoon. Highs in the upper 60s.
$$
WYZ140-312045-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
1245 PM MDT Sat Aug 30 2025
.THIS AFTERNOON...
Sky/weather.........Mostly sunny. Isolated showers and
thunderstorms. Chance of precipitation 20
percent.
Chance of thunder...10 percent.
Max temperature.....66-71.
24 hr trend......3 degrees warmer.
Min humidity........30-36 percent.
24 hr trend......13 percent drier.
20-foot winds.......Northwest winds around 10 mph with higher
gusts.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......8200-9200 ft agl.
Smoke dispersal.....Very good.
.TONIGHT...
Sky/weather.........Mostly clear. Patchy smoke late in the evening.
Chance of thunder...0 percent.
Min temperature.....40-45.
24 hr trend......1 degree warmer.
Max humidity........73-79 percent.
24 hr trend......23 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.....Northwest around 10 mph until 2400, then
northeast.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph until 2400, then
northeast.
Mixing Height.......3600-5600 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny. Patchy smoke in the afternoon.
Chance of thunder...0 percent.
Max temperature.....70-75.
24 hr trend......4 degrees warmer.
Min humidity........23-29 percent.
24 hr trend......8 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....South around 10 mph until 1200, then northwest.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 10 mph until 1200, then
northwest.
Mixing Height.......1600-3600 ft agl until 1200, then 6400-8400 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.SUNDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....40-45.
24 hr trend......1 degree warmer.
Max humidity........65-71 percent.
24 hr trend......7 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 east.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph until 2400, then east.
Mixing Height.......3400-5400 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.LABOR DAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....72-77.
24 hr trend......3 degrees warmer.
Min humidity........24-30 percent.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....Southeast around 5 mph until 1200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 5 mph until 1200, then west.
Mixing Height.......2200-4200 ft agl until 1200, then 8200-10200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.LABOR DAY THROUGH THURSDAY...Mostly clear. Lows in the lower
40s. Highs 70 to 75. Winds generally less than 10 mph.
.FRIDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the lower 70s.
.SATURDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms in the afternoon. Highs in the lower 70s.
$$
WYZ415-312045-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
1245 PM MDT Sat Aug 30 2025
.THIS AFTERNOON...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....65-70.
24 hr trend......3 degrees warmer.
Min humidity........32-38 percent.
24 hr trend......5 percent drier.
20-foot winds.......Northwest winds around 10 mph with higher
gusts.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......7200-8600 ft agl.
Smoke dispersal.....Very good.
.TONIGHT...
Sky/weather.........Mostly clear. Patchy smoke late in the evening.
Chance of thunder...0 percent.
Min temperature.....41-46.
24 hr trend......1 degree warmer.
Max humidity........70-76 percent.
24 hr trend......20 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.....Northwest around 15 mph until 2400, then
northeast.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph until 2400, then
northeast.
Mixing Height.......3000-5000 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny. Patchy smoke early in the
morning. Patchy smoke late in the morning.
Chance of thunder...0 percent.
Max temperature.....67-72.
24 hr trend......4 degrees warmer.
Min humidity........25-31 percent.
24 hr trend......8 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, 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.....Northeast around 10 mph until 1200, then
northwest.
Mixing Height.......1400-3400 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.SUNDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....41-46.
24 hr trend......2 degrees warmer.
Max humidity........64-70 percent.
24 hr trend......6 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 east.
Chc of wetting rain.Zero percent.
Transport winds.....North around 10 mph until 2400, then east.
Mixing Height.......3200-5200 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor.
.LABOR DAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....71-76.
24 hr trend......3 degrees warmer.
Min humidity........25-31 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....Southeast 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.......2000-4000 ft agl until 1200, then 7800-9800 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.LABOR DAY THROUGH TUESDAY...Mostly clear. Lows in the mid 40s.
Highs in the lower 70s. Winds generally less than 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the lower 70s.
Winds generally less than 10 mph.
.THURSDAY...Mostly clear. Lows in the lower 40s. Highs in the
lower 70s. Winds generally less than 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the lower 70s.
.SATURDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms in the afternoon. Highs around 70.
$$
WYZ416-312045-
West Wind River Mountains/East Zone Bridger Teton NF-
1245 PM MDT Sat Aug 30 2025
.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Isolated showers and
thunderstorms. Chance of precipitation 20
percent.
Chance of thunder...10 percent.
Max temperature.....61-66.
24 hr trend......Unchanged.
Min humidity........32-38 percent.
24 hr trend......3 percent drier.
20-foot winds.......Northwest winds around 15 mph with higher
gusts.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 20 mph.
Mixing Height.......7800-9000 ft agl.
Smoke dispersal.....Very good.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....40-45.
24 hr trend......3 degrees warmer.
Max humidity........65-71 percent.
24 hr trend......19 percent drier.
Humidity recovery...Good.
20-foot winds.......North winds around 10 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....North around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 15 mph.
Mixing Height.......3200-5200 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SUNDAY...
Sky/weather.........Sunny then becoming partly cloudy. Patchy smoke
in the afternoon.
Chance of thunder...0 percent.
Max temperature.....63-68.
24 hr trend......3 degrees warmer.
Min humidity........24-30 percent.
24 hr trend......5 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.SUNDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....41-46.
24 hr trend......2 degrees warmer.
Max humidity........56-62 percent.
24 hr trend......11 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Northeast around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 10 mph.
Mixing Height.......3200-5200 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.LABOR DAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....66-71.
24 hr trend......3 degrees warmer.
Min humidity........25-31 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....Southeast around 10 mph until 1200, then
southwest.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.LABOR DAY THROUGH TUESDAY...Mostly clear. Lows in the lower 40s.
Highs in the upper 60s. Winds generally less than 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the upper 60s.
Winds generally less than 10 mph.
.THURSDAY...Mostly clear. Lows in the lower 40s. Highs in the
upper 60s. Winds generally less than 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the upper 60s.
.SATURDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms in the afternoon. Highs in the upper 60s.
$$
WYZ288-312045-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
1245 PM MDT Sat Aug 30 2025
.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Scattered showers and
thunderstorms early in the evening, then
isolated showers and thunderstorms early in the
evening. Chance of precipitation 40 percent.
Chance of thunder...30 percent.
Max temperature.....62-67.
24 hr trend......1 degree cooler.
Min humidity........34-40 percent.
24 hr trend......2 percent wetter.
20-foot winds.......North winds around 10 mph with higher gusts.
Ridge top winds.....North around 15 mph.
Chc of wetting rain.5 percent.
Transport winds.....North around 15 mph.
Mixing Height.......6400-8400 ft agl.
Smoke dispersal.....Good to very good.
.TONIGHT...
Sky/weather.........Mostly clear. Isolated showers and
thunderstorms early in the evening. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....44-49.
24 hr trend......3 degrees warmer.
Max humidity........66-72 percent.
24 hr trend......22 percent drier.
Humidity recovery...Good.
20-foot winds.......Northeast winds around 10 mph until 2100, then
northwest until 0300, then downslope/downvalley
4-7 mph. Gusts up to 15 mph.
Ridge top winds.....North around 15 mph until 2400, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......2600-4600 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor to fair.
.SUNDAY...
Sky/weather.........Sunny then becoming partly cloudy. Patchy smoke
in the afternoon.
Chance of thunder...0 percent.
Max temperature.....65-70.
24 hr trend......4 degrees warmer.
Min humidity........26-32 percent.
24 hr trend......9 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.....Northwest around 10 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 6000-8000 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.SUNDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....44-49.
24 hr trend......1 degree warmer.
Max humidity........49-55 percent.
24 hr trend......16 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
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 south.
Mixing Height.......2800-4800 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.LABOR DAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....67-72.
24 hr trend......2 degrees warmer.
Min humidity........26-32 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then east
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then east.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.MONDAY NIGHT...Mostly clear. Lows in the upper 40s. Winds
generally less than 10 mph.
.TUESDAY THROUGH WEDNESDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows 44 to 49. Highs 66 to 71.
Northwest winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the mid 40s. Highs in the upper
60s. Northwest winds around 10 mph.
.FRIDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the upper 60s.
.SATURDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms in the afternoon. Highs around 70.
$$
WYZ414-312045-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
1245 PM MDT Sat Aug 30 2025
.THIS AFTERNOON...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....65-70.
24 hr trend......2 degrees warmer.
Min humidity........23-29 percent.
24 hr trend......7 percent drier.
20-foot winds.......Northwest winds around 15 mph with higher
gusts.
Ridge top winds.....Northwest around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 20 mph.
Mixing Height.......7400-8800 ft agl.
Smoke dispersal.....Very good.
.TONIGHT...
Sky/weather.........Clear. Patchy smoke in the late evening and
overnight.
Chance of thunder...0 percent.
Min temperature.....40-45.
24 hr trend......1 degree warmer.
Max humidity........70-76 percent.
24 hr trend......18 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph until 2400, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....Northwest around 15 mph until 2400, then
northeast.
Chc of wetting rain.Zero percent.
Transport winds.....North 10 to 15 mph.
Mixing Height.......2800-4800 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny. Patchy smoke.
Chance of thunder...0 percent.
Max temperature.....68-73.
24 hr trend......3 degrees warmer.
Min humidity........20-26 percent.
24 hr trend......4 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 10 mph.
Ridge top winds.....East 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.......1800-3800 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Poor to fair.
.SUNDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....41-46.
24 hr trend......1 degree warmer.
Max humidity........61-67 percent.
24 hr trend......9 percent drier.
Humidity recovery...Good.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Northeast around 10 mph until 2400, then east.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 10 mph until 2400, then
southeast.
Mixing Height.......3000-5000 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor.
.LABOR DAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....72-77.
24 hr trend......3 degrees warmer.
Min humidity........22-28 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 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.......2200-4200 ft agl until 1200, then 8200-10200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.LABOR DAY THROUGH THURSDAY...Mostly clear. Lows 44 to 49. Highs
71 to 76. Winds generally less than 10 mph.
.FRIDAY...Mostly clear. Lows in the upper 40s. Highs in the lower
70s.
.SATURDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms in the afternoon. Highs in the lower 70s.
$$
WYZ277>279-312045-
Lincoln and Uinta Counties/Lower Elevations-
Upper Green River Basin/Rock Springs BLM-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Including the cities of Evanston, Fort Bridger, Kemmerer,
Big Piney, Farson, Pinedale, Green River, Rock Springs,
and Wamsutter
1245 PM MDT Sat Aug 30 2025
.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Patchy smoke early in the
evening. Isolated showers and thunderstorms
through the day. Chance of precipitation 20
percent.
Chance of thunder...0 percent.
Max temperature.....68-73.
24 hr trend......3 degrees warmer.
Min humidity........25-31 percent.
24 hr trend......9 percent drier.
20-foot winds.......Northwest winds around 15 mph with higher
gusts.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......9600-10800 ft agl.
Smoke dispersal.....Very good to excellent.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....42-47.
24 hr trend......Unchanged.
Max humidity........65-71 percent.
24 hr trend......9 percent drier.
Humidity recovery...Good.
20-foot winds.......North winds around 10 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....North 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North 10 to 15 mph.
Mixing Height.......4400-6400 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny. Patchy smoke late in the
afternoon.
Chance of thunder...0 percent.
Max temperature.....69-74.
24 hr trend......1 degree warmer.
Min humidity........22-28 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph.
Ridge top winds.....North around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 10 mph until 1200, then
northwest.
Mixing Height.......1400-3400 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor until 1200, then fair to good.
.SUNDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....43-48.
24 hr trend......Unchanged.
Max humidity........54-60 percent.
24 hr trend......16 percent drier.
Humidity recovery...Moderate.
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.......3400-5400 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.LABOR DAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....72-77.
24 hr trend......3 degrees warmer.
Min humidity........23-29 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....East around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....East around 10 mph until 1200, then west.
Mixing Height.......1800-3800 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.LABOR DAY THROUGH THURSDAY...Mostly clear. Lows 45 to 50. Highs
in the upper 70s. Winds generally less than 10 mph.
.FRIDAY...Mostly clear. Lows in the upper 40s. Highs in the upper
70s.
.SATURDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 70s.
$$
WYZ289-312045-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
1245 PM MDT Sat Aug 30 2025
.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Isolated showers and
thunderstorms. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....65-70.
24 hr trend......1 degree cooler.
Min humidity........33-39 percent.
24 hr trend......4 percent wetter.
20-foot winds.......North winds around 10 mph with higher gusts.
Ridge top winds.....North around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......6800-8800 ft agl.
Smoke dispersal.....Good to very good.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....47-52.
24 hr trend......1 degree cooler.
Max humidity........73-79 percent.
24 hr trend......15 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northeast winds around 10 mph until 2400, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Northeast around 15 mph until 2400, then
northwest.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast 10 to 15 mph.
Mixing Height.......2800-4800 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly sunny. Patchy smoke late in the
afternoon.
Chance of thunder...0 percent.
Max temperature.....70-75.
24 hr trend......3 degrees warmer.
Min humidity........22-28 percent.
24 hr trend......10 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 6400-8400 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.SUNDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....48-53.
24 hr trend......1 degree warmer.
Max humidity........54-60 percent.
24 hr trend......20 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....East around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....East around 10 mph.
Mixing Height.......3000-5000 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Poor.
.LABOR DAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....72-77.
24 hr trend......3 degrees warmer.
Min humidity........19-25 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph.
Ridge top winds.....Southwest 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.......1600-3600 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.LABOR DAY THROUGH TUESDAY...Mostly clear. Lows in the lower 50s.
Highs in the upper 70s. Winds generally less than 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
North winds around 10 mph.
.THURSDAY...Mostly clear. Lows in the upper 40s. Highs in the mid
70s. Winds generally less than 10 mph.
.FRIDAY...Mostly clear. Lows around 50. Highs in the upper 70s.
.SATURDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 70s.
$$
WYZ300-312045-
Casper Mountain-
1245 PM MDT Sat Aug 30 2025
.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Scattered showers and
thunderstorms. Chance of precipitation 50
percent.
Chance of thunder...40 percent.
Max temperature.....62-67.
24 hr trend......3 degrees cooler.
Min humidity........51-57 percent.
24 hr trend......9 percent wetter.
20-foot winds.......Northwest winds around 10 mph with higher
gusts.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.25 percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......3600-5400 ft agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Mostly clear. Isolated showers and
thunderstorms early in the evening. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....48-53.
24 hr trend......1 degree warmer.
Max humidity........74-80 percent.
24 hr trend......17 percent drier.
Humidity recovery...Excellent.
20-foot winds.......North winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Northeast around 15 mph until 2400, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 15 mph until 2400, then west.
Mixing Height.......1400-3400 ft agl until 2400, then 200-400 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....68-73.
24 hr trend......6 degrees warmer.
Min humidity........32-38 percent.
24 hr trend......19 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
northwest 10 to 15 mph. Gusts up to 20 mph.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 15 to 20 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 6000-8000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.SUNDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....48-53.
24 hr trend......1 degree warmer.
Max humidity........56-62 percent.
24 hr trend......22 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Northeast around 10 mph until 2400, then
southeast.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 10 mph until 2400, then
southeast.
Mixing Height.......2800-4800 ft agl until 2400, then 200-400 ft
agl.
Smoke dispersal.....Poor to fair until 2400, then poor.
.LABOR DAY...
Sky/weather.........Sunny.
Chance of thunder...0 percent.
Max temperature.....71-76.
24 hr trend......3 degrees warmer.
Min humidity........26-32 percent.
24 hr trend......4 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then north
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.LABOR DAY THROUGH TUESDAY...Mostly clear. Lows 46 to 51. Highs
in the lower 70s. Winds generally less than 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the mid 60s. Winds
generally less than 10 mph.
.THURSDAY...Mostly clear. Lows in the mid 40s. Highs in the upper
60s. Winds generally less than 10 mph.
.FRIDAY THROUGH SATURDAY...Mostly clear. Lows around 50. Highs
71 to 76.
$$