Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
663
FNUS55 KRIW 281835
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
1235 PM MDT Thu Aug 28 2025
.DISCUSSION...
...Yellowstone NP and Teton dispatch areas (includes fire weather
zones 140...414...415...and 416)...
Another day of showers and thunderstorms across much of the dispatch
area. Precipitation lingers through the evening before gradually
dissipating shortly after sunset. Min RH will be well above critical
with most seeing values of 50 to 70%. Winds prevail mostly from the
west/southwest around 10 mph with a few gusts near 20 mph at times.
Stronger outflow winds near 30 mph cannot be ruled out nearby any
developing showers or thunderstorms. Chances for wetting rains look
to be above 50% for much of the area today with lower chances across
southern zones 414 and 416. Isolated showers and thunderstorms will
be possible in the afternoon and evening through Saturday with
northern zones seeing the highest chances.
...Cody dispatch area (includes fire weather zones 275...276...
282...283...285...286...287...288...and 289)...
Another day of showers and thunderstorms with the best chances being
across northern zones today. Precipitation lingers through the
evening before gradually dissipating shortly after sunset. Min RH
will be well above critical with most seeing values of 35 to 45%.
Winds prevail mostly from the west/northwest around 10 mph with a
few gusts near 20 mph at times. Stronger outflow winds near 30 mph
cannot be ruled out nearby any developing showers or thunderstorms.
Chances for wetting rains look to be the most favorable across
northern zones 286, 287, 276, 282, 275 and 285 with values ranging
from 10 to 40%. Higher chances are forecast over the higher
elevations of the Absarokas and Bighorn Ranges. Southern zones look
to have a lower chance for showers and thunderstorms ranging from 10
to 30%. Isolated showers and thunderstorms will be possible in the
afternoon and evening through Saturday with northern zones seeing
the highest chances.
...Casper dispatch area (includes fire weather zones 277...278...
279...280...281...285...289...and 300)...
Another day of showers and thunderstorms with the best chances being
across northern zones today. Precipitation lingers through the
evening before gradually dissipating shortly after sunset. Min RH
will be well above critical with most seeing values of 40 to 50%.
Winds prevail mostly from the west/northwest around 10 mph with a
few gusts near 20 mph at times. Stronger outflow winds near 30 mph
cannot be ruled out nearby any developing showers or thunderstorms.
Chances for wetting rains look to be the most favorable across
northern zones 285, 281 and 280 with values ranging from 10 to 40%.
Higher chances are forecast over the higher elevations of the
Bighorn Ranges. Southern zones are forecast to have a much lower
chance for showers and thunderstorms ranging around 10 to 20%.
Isolated showers and thunderstorms will be possible in the afternoon
and evening through Saturday with northern zones seeing the highest
chances.
...Thunderstorms imply strong gusty and erratic winds...
WYZ280-292045-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
1235 PM MDT Thu Aug 28 2025
.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Chance of showers and
thunderstorms. Chance of precipitation 50
percent.
Chance of thunder...30 percent.
Max temperature.....70-75.
24 hr trend......3 degrees warmer.
Min humidity........40-46 percent.
24 hr trend......10 percent drier.
20-foot winds.......Southwest winds around 10 mph with higher
gusts.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......5800-7200 ft agl.
Smoke dispersal.....Good to very good.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers and
thunderstorms early in the evening, then slight
chance of showers and thunderstorms early in
the evening. Chance of precipitation 50
percent.
Chance of thunder...30 percent.
Min temperature.....53-58.
24 hr trend......1 degree warmer.
Max humidity........81-87 percent.
24 hr trend......14 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....Northwest around 10 mph until 2400, then west.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......2200-4200 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy. Slight chance of showers in the
afternoon. Slight chance of thunderstorms in
the afternoon. Chance of showers late in the
afternoon. Chance of precipitation 40 percent.
Chance of thunder...20 percent.
Max temperature.....70-75.
24 hr trend......1 degree cooler.
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.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy. Chance of thunderstorms early in
the evening. Chance of showers through the
night. Slight chance of thunderstorms in the
late evening and early morning. Chance of
precipitation 40 percent.
Chance of thunder...30 percent.
Min temperature.....50-55.
24 hr trend......3 degrees cooler.
Max humidity........88-94 percent.
24 hr trend......9 percent wetter.
Humidity recovery...Excellent.
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 northwest.
Chc of wetting rain.7 percent.
Transport winds.....North 10 to 15 mph.
Mixing Height.......2400-4400 ft agl until 2400, then 600-1400 ft
agl.
Smoke dispersal.....Poor to fair.
.SATURDAY...
Sky/weather.........Partly cloudy. Chance of showers through the
day. Slight chance of thunderstorms early in
the afternoon, then chance of thunderstorms
late in the afternoon. Chance of precipitation
50 percent.
Chance of thunder...30 percent.
Max temperature.....68-73.
24 hr trend......1 degree cooler.
Min humidity........44-50 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then north
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent until 1200, then 10 percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 5800-7800 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Mostly clear. Slight chance of showers and
thunderstorms in the evening. Lows in the upper 40s. Winds
generally less than 10 mph.
.SUNDAY...Clear. Lows in the upper 40s. Highs in the upper 70s.
Winds generally less than 10 mph.
.LABOR DAY...Mostly clear. Lows around 50. Highs around 80. Winds
generally less than 10 mph.
.TUESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows around 50. Highs around 80. North winds
around 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
.THURSDAY...Mostly sunny. Highs in the upper 70s.
$$
WYZ283-292045-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
1235 PM MDT Thu Aug 28 2025
.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....67-72.
24 hr trend......3 degrees warmer.
Min humidity........45-51 percent.
24 hr trend......12 percent drier.
20-foot winds.......West winds around 10 mph with higher gusts.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......5600-7000 ft agl.
Smoke dispersal.....Good.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms in the evening. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....50-55.
24 hr trend......1 degree warmer.
Max humidity........71-77 percent.
24 hr trend......22 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph until 2100, then
downslope/downvalley 4-7 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.......2000-4000 ft agl until 2400, then 600-800 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of showers and slight chance of
thunderstorms in the afternoon. Chance of
precipitation 40 percent.
Chance of thunder...20 percent.
Max temperature.....70-75.
24 hr trend......1 degree warmer.
Min humidity........34-40 percent.
24 hr trend......9 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
northwest around 10 mph until 1500, then north.
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 10 to 15 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 6400-8400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy. Slight chance of thunderstorms
in the evening. Chance of showers through the
night. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....47-52.
24 hr trend......3 degrees cooler.
Max humidity........77-83 percent.
24 hr trend......12 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northeast winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....North around 10 mph until 2400, then northwest.
Chc of wetting rain.7 percent.
Transport winds.....North 10 to 15 mph.
Mixing Height.......3000-5000 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor to fair until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny. Slight chance of showers in the
morning, then chance of showers and slight
chance of thunderstorms in the afternoon.
Chance of precipitation 40 percent.
Chance of thunder...20 percent.
Max temperature.....69-74.
24 hr trend......Unchanged.
Min humidity........39-45 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northeast around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest 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 5600-7600 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Mostly clear. Lows in the upper 40s. Winds
generally less than 10 mph.
.SUNDAY...Clear. Lows around 50. Highs in the upper 70s. Winds
generally less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the lower 50s. Highs in the
lower 80s. Winds generally less than 10 mph.
.TUESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs around 80. Winds
generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the mid 70s.
.THURSDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 70s.
$$
WYZ285-292045-
South Bighorn Mountains-
1235 PM MDT Thu Aug 28 2025
.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Chance of showers and
thunderstorms. Chance of precipitation 50
percent.
Chance of thunder...40 percent.
Max temperature.....65-70.
24 hr trend......1 degree warmer.
Min humidity........51-57 percent.
24 hr trend......6 percent wetter.
20-foot winds.......West winds around 10 mph with higher gusts.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......4200-6200 ft agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers and
thunderstorms early in the evening, then slight
chance of showers and thunderstorms early in
the evening. Chance of precipitation 50
percent.
Chance of thunder...30 percent.
Min temperature.....49-54.
24 hr trend......1 degree warmer.
Max humidity........83-89 percent.
24 hr trend......6 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph until 2400, then
west around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.10 percent until 2400, then zero percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......1000-3000 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy. Slight chance of showers. Slight
chance of thunderstorms in the late morning and
afternoon, then chance of showers and
thunderstorms late in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....62-67.
24 hr trend......2 degrees cooler.
Min humidity........54-60 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.Less than 5 percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 4000-6000 ft
agl.
Smoke dispersal.....Poor to fair.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy. Chance of thunderstorms early in
the evening. Chance of showers through the
night. Slight chance of thunderstorms late in
the evening. Chance of precipitation 50
percent.
Chance of thunder...30 percent.
Min temperature.....47-52.
24 hr trend......2 degrees cooler.
Max humidity........80-86 percent.
24 hr trend......Unchanged.
Humidity recovery...Excellent.
20-foot winds.......North winds around 10 mph until 2400, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....North around 15 mph until 2400, then northwest.
Chc of wetting rain.15 percent until 2400, then 5 percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1800-3800 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Partly cloudy. Chance of showers through the
day. Chance of thunderstorms in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....63-68.
24 hr trend......Unchanged.
Min humidity........48-54 percent.
24 hr trend......3 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.5 percent until 1200, then 20 percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 4400-6400 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Mostly clear. Slight chance of showers and
thunderstorms in the evening. Lows in the upper 40s. Winds
generally less than 10 mph.
.SUNDAY...Clear. Lows in the lower 50s. Highs in the lower 70s.
Winds generally less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the lower 50s. Highs in the
lower 70s. Winds generally less than 10 mph.
.TUESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows around 50. Highs in the lower 70s. North
winds around 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the upper 60s.
.THURSDAY...Mostly sunny. Highs around 70.
$$
WYZ281-292045-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
1235 PM MDT Thu Aug 28 2025
.THIS AFTERNOON...
Sky/weather.........Mostly cloudy. Chance of showers and
thunderstorms. Chance of precipitation 50
percent.
Chance of thunder...50 percent.
Max temperature.....67-72.
24 hr trend......3 degrees cooler.
Min humidity........46-52 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.10 percent.
Transport winds.....West around 15 mph.
Mixing Height.......4200-6200 ft agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of showers and thunderstorms in the
evening, then slight chance of showers and
thunderstorms after midnight. Chance of
precipitation 50 percent.
Chance of thunder...40 percent.
Min temperature.....53-58.
24 hr trend......Unchanged.
Max humidity........85-91 percent.
24 hr trend......4 percent wetter.
Humidity recovery...Excellent.
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 west.
Chc of wetting rain.25 percent until 2400, then zero percent.
Transport winds.....North around 10 mph until 2400, then northwest.
Mixing Height.......800-2800 ft agl until 2400, then 600-800 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms in the morning. Chance of showers
and thunderstorms in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...40 percent.
Max temperature.....64-69.
24 hr trend......4 degrees cooler.
Min humidity........56-62 percent.
24 hr trend......8 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then north
10 to 15 mph with gusts to around 25 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent until 1200, then 25 percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 3400-5400 ft
agl.
Smoke dispersal.....Poor to fair.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy. Chance of showers and
thunderstorms in the evening, then slight
chance of showers after midnight. Chance of
precipitation 50 percent.
Chance of thunder...30 percent.
Min temperature.....49-54.
24 hr trend......5 degrees cooler.
Max humidity........86-92 percent.
24 hr trend......5 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......North winds around 10 mph and gusty until 2100,
then downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.20 percent until 2400, then 5 percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 2400, then 600-1000 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Chance of showers through the day. Slight
chance of thunderstorms early in the afternoon,
then chance of thunderstorms late in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....65-70.
24 hr trend......Unchanged.
Min humidity........53-59 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then north
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....North 10 to 15 mph.
Chc of wetting rain.Zero percent until 1200, then 25 percent.
Transport winds.....North 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 4600-6400 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Mostly clear. Slight chance of showers and
thunderstorms in the evening. Lows around 50. Winds generally
less than 10 mph.
.SUNDAY...Clear. Lows in the lower 50s. Highs in the upper 70s.
Winds generally less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the lower 50s. Highs in the
lower 80s. Winds generally less than 10 mph.
.TUESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the lower 80s.
North winds around 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
.THURSDAY...Mostly sunny. Highs in the upper 70s.
$$
WYZ282-292045-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
1235 PM MDT Thu Aug 28 2025
.THIS AFTERNOON...
Sky/weather.........Mostly cloudy. Chance of showers and
thunderstorms. Chance of precipitation 50
percent.
Chance of thunder...40 percent.
Max temperature.....67-72.
24 hr trend......1 degree warmer.
Min humidity........42-48 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Northwest winds around 15 mph with gusts to
around 25 mph.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.15 percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......4400-6400 ft agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers and
thunderstorms early in the evening, then slight
chance of showers and thunderstorms early in
the evening. Chance of precipitation 50
percent.
Chance of thunder...30 percent.
Min temperature.....51-56.
24 hr trend......Unchanged.
Max humidity........81-87 percent.
24 hr trend......1 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Northwest around 10 mph until 2400, then
southwest.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......800-2800 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy. Slight chance of showers. Slight
chance of thunderstorms in the late morning and
afternoon. Chance of showers late in the
afternoon. Chance of precipitation 40 percent.
Chance of thunder...20 percent.
Max temperature.....65-70.
24 hr trend......1 degree cooler.
Min humidity........43-49 percent.
24 hr trend......1 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.....West around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Poor to fair.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy. Slight chance of thunderstorms
in the evening. Chance of showers through the
night. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....47-52.
24 hr trend......3 degrees cooler.
Max humidity........79-85 percent.
24 hr trend......3 percent drier.
Humidity recovery...Excellent.
20-foot winds.......North winds around 10 mph until 2400, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....North around 15 mph until 2400, then west.
Chc of wetting rain.10 percent until 2400, then zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......2800-4800 ft agl until 2400, then 600-1000 ft
agl.
Smoke dispersal.....Poor to fair.
.SATURDAY...
Sky/weather.........Partly cloudy. Chance of showers through the
day. Slight chance of thunderstorms in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....66-71.
24 hr trend......1 degree warmer.
Min humidity........39-45 percent.
24 hr trend......3 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.....Northwest 10 to 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Mostly clear. Slight chance of showers and
thunderstorms in the evening. Lows in the lower 50s. Winds
generally less than 10 mph.
.SUNDAY...Warmer, clear. Lows in the lower 50s. Highs in the
lower 80s. Winds generally less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the mid 50s. Highs in the mid
80s. Winds generally less than 10 mph.
.TUESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the lower 80s.
Northwest winds around 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows around 50. Highs around 80.
$$
WYZ275-292045-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
1235 PM MDT Thu Aug 28 2025
.THIS AFTERNOON...
Sky/weather.........Mostly cloudy. Chance of showers and
thunderstorms. Chance of precipitation 50
percent.
Chance of thunder...40 percent.
Max temperature.....65-70.
24 hr trend......2 degrees cooler.
Min humidity........43-49 percent.
24 hr trend......7 percent wetter.
20-foot winds.......West winds around 10 mph with gusts to around
25 mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.10 percent.
Transport winds.....West around 15 mph.
Mixing Height.......4000-6000 ft agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of showers early in the evening. Slight
chance of thunderstorms in the evening. Slight
chance of showers early in the evening. Chance
of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....50-55.
24 hr trend......Unchanged.
Max humidity........81-87 percent.
24 hr trend......5 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......West winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy. Slight chance of showers. Slight
chance of thunderstorms in the late morning and
afternoon, then chance of showers and
thunderstorms late in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....63-68.
24 hr trend......2 degrees cooler.
Min humidity........48-54 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then north
10 to 15 mph with higher gusts.
Ridge top winds.....West around 10 mph until 1200, then north.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 4400-6400 ft
agl.
Smoke dispersal.....Poor to fair.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then
slight chance of showers after midnight. Chance
of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....47-52.
24 hr trend......5 degrees cooler.
Max humidity........80-86 percent.
24 hr trend......2 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph with gusts to
around 25 mph until 0300, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......2000-4000 ft agl until 2400, then 600-1200 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Partly cloudy. Chance of showers through the
day. Slight chance of thunderstorms in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....65-70.
24 hr trend......3 degrees warmer.
Min humidity........37-43 percent.
24 hr trend......6 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then north
around 10 mph with higher gusts.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 5000-7000 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Mostly clear. Lows in the lower 50s. Winds
generally less than 10 mph.
.SUNDAY...Warmer, clear. Lows in the mid 50s. Highs in the lower
80s. Winds generally less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the mid 50s. Highs in the mid
80s. Winds generally less than 10 mph.
.TUESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the lower 80s.
North winds around 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows around 50. Highs in the upper 70s.
.THURSDAY...Mostly sunny. Highs in the lower 80s.
$$
WYZ276-292045-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
1235 PM MDT Thu Aug 28 2025
.THIS AFTERNOON...
Sky/weather.........Cloudy. Showers likely early in the evening.
Chance of thunderstorms through the day. Chance
of showers early in the evening. Chance of
precipitation 70 percent.
Chance of thunder...50 percent.
Max temperature.....67-72.
24 hr trend......2 degrees cooler.
Min humidity........42-48 percent.
24 hr trend......9 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph.
Ridge top winds.....West around 10 mph.
Chc of wetting rain.30 percent.
Transport winds.....West around 10 mph.
Mixing Height.......2800-4000 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Chance of showers early in the evening. Slight
chance of thunderstorms in the evening. Slight
chance of showers early in the evening. Chance
of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....50-55.
24 hr trend......Unchanged.
Max humidity........75-81 percent.
24 hr trend......1 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....West around 10 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....West around 10 mph.
Mixing Height.......1000-3000 ft agl until 2400, then 600-1000 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy. Slight chance of showers in the
morning. Chance of showers and thunderstorms in
the afternoon. Chance of precipitation 50
percent.
Chance of thunder...30 percent.
Max temperature.....65-70.
24 hr trend......2 degrees cooler.
Min humidity........44-50 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, 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.Less than 5 percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 5000-7000 ft
agl.
Smoke dispersal.....Fair to good.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then
slight chance of showers after midnight. Chance
of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....48-53.
24 hr trend......3 degrees cooler.
Max humidity........76-82 percent.
24 hr trend......1 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.....North around 10 mph until 2400, then west.
Chc of wetting rain.10 percent until 2400, then zero percent.
Transport winds.....North around 15 mph until 2400, then west.
Mixing Height.......1800-3800 ft agl until 2400, then 600-1400 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Partly cloudy. Slight chance of showers in the
morning, then chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....67-72.
24 hr trend......3 degrees warmer.
Min humidity........46-52 percent.
24 hr trend......3 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.....Northwest around 10 mph until 1200, then
northeast.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 4400-6400 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Mostly clear. Lows in the lower 50s. Winds
generally less than 10 mph.
.SUNDAY...Clear. Lows in the mid 50s. Highs in the upper 70s.
Winds generally less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the mid 50s. Highs in the
upper 70s. Winds generally less than 10 mph.
.TUESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the upper 70s.
Northwest winds around 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the mid 70s.
.THURSDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 70s.
$$
WYZ287-292045-
Owl Creek Mountains-
1235 PM MDT Thu Aug 28 2025
.THIS AFTERNOON...
Sky/weather.........Mostly cloudy. Showers likely early in the
evening. Chance of thunderstorms through the
day. Chance of showers early in the evening.
Chance of precipitation 70 percent.
Chance of thunder...50 percent.
Max temperature.....64-69.
24 hr trend......2 degrees warmer.
Min humidity........47-53 percent.
24 hr trend......2 percent drier.
20-foot winds.......Northwest winds around 10 mph with higher
gusts.
Ridge top winds.....Northwest around 15 mph.
Chc of wetting rain.20 percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......3600-5600 ft agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers early in the
evening. Slight chance of thunderstorms in the
evening. Slight chance of showers in the
evening. Chance of precipitation 40 percent.
Chance of thunder...20 percent.
Min temperature.....49-54.
24 hr trend......Unchanged.
Max humidity........74-80 percent.
24 hr trend......6 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest around 10 mph until 2400, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......600-2600 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers late in the morning.
Chance of showers and slight chance of
thunderstorms in the afternoon. Chance of
precipitation 40 percent.
Chance of thunder...20 percent.
Max temperature.....64-69.
24 hr trend......1 degree cooler.
Min humidity........42-48 percent.
24 hr trend......3 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.....Northwest around 10 mph until 1200, then
northeast.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 4800-6800 ft
agl.
Smoke dispersal.....Poor to fair.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy. Chance of showers and
thunderstorms in the evening, then slight
chance of showers after midnight. Chance of
precipitation 50 percent.
Chance of thunder...30 percent.
Min temperature.....48-53.
24 hr trend......1 degree cooler.
Max humidity........76-82 percent.
24 hr trend......3 percent drier.
Humidity recovery...Excellent.
20-foot winds.......North winds around 10 mph until 2400, 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.20 percent until 2400, then zero percent.
Transport winds.....North around 15 mph until 2400, then northwest.
Mixing Height.......2000-4000 ft agl until 2400, then 200-800 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers in the morning, then
chance of showers and thunderstorms in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....63-68.
24 hr trend......1 degree warmer.
Min humidity........45-51 percent.
24 hr trend......3 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.....Northwest around 10 mph until 1200, then
northeast.
Chc of wetting rain.Less than 5 percent.
Transport winds.....North around 10 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 4400-6400 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Mostly clear. Lows in the lower 50s. Winds
generally less than 10 mph.
.SUNDAY...Clear. Lows in the lower 50s. Highs in the mid 70s.
Winds generally less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the mid 50s. Highs in the mid
70s. Winds generally less than 10 mph.
.TUESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the mid 70s. North
winds around 10 mph.
.WEDNESDAY...Partly cloudy. Chance of showers and slight chance
of thunderstorms. Lows around 50. Highs in the lower 70s.
.THURSDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the lower 70s.
$$
WYZ286-292045-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
1235 PM MDT Thu Aug 28 2025
.THIS AFTERNOON...
Sky/weather.........Mostly cloudy. Showers likely and chance of
thunderstorms. Chance of precipitation 70
percent.
Chance of thunder...50 percent.
Max temperature.....56-61.
24 hr trend......3 degrees cooler.
Min humidity........64-70 percent.
24 hr trend......14 percent wetter.
20-foot winds.......West winds around 10 mph with gusts to around
25 mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.40 percent.
Transport winds.....West around 15 mph.
Mixing Height.......2600-4000 ft agl.
Smoke dispersal.....Fair.
.TONIGHT...
Sky/weather.........Partly cloudy. Showers likely and chance of
thunderstorms in the evening. Slight chance of
showers after midnight. Chance of precipitation
70 percent.
Chance of thunder...30 percent.
Min temperature.....45-50.
24 hr trend......Unchanged.
Max humidity........81-87 percent.
24 hr trend......8 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds around 10 mph and gusty.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.10 percent until 2400, then zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......1000-3000 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy. Slight chance of showers until
late afternoon. Slight chance of thunderstorms
in the late morning and early afternoon, then
chance of showers and thunderstorms late in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....58-63.
24 hr trend......3 degrees warmer.
Min humidity........49-55 percent.
24 hr trend......20 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.Less than 5 percent.
Transport winds.....Northwest around 15 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.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then
slight chance of showers after midnight. Chance
of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....41-46.
24 hr trend......2 degrees cooler.
Max humidity........76-82 percent.
24 hr trend......9 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph and gusty until
2100, then downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest around 10 mph.
Chc of wetting rain.10 percent until 2400, then zero percent.
Transport winds.....Northwest around 10 mph.
Mixing Height.......2600-4600 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor to fair until 2400, then poor.
.SATURDAY...
Sky/weather.........Partly cloudy. Slight chance of showers in the
morning, then chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....59-64.
24 hr trend......1 degree warmer.
Min humidity........42-48 percent.
24 hr trend......4 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 10 to 15 mph.
Chc of wetting rain.Zero percent until 1200, then 10 percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 5800-7800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Mostly clear. Slight chance of showers and
thunderstorms in the evening. Lows in the lower 40s. Winds
generally less than 10 mph.
.SUNDAY...Mostly clear. Lows in the mid 40s. Highs in the upper
60s. Winds generally less than 10 mph.
.LABOR DAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the upper 60s. Winds
generally less than 10 mph.
.TUESDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the mid 40s. Highs in the upper 60s. Winds
generally less than 10 mph.
.WEDNESDAY...Partly cloudy with chance of showers and slight
chance of thunderstorms. Lows in the mid 40s. Highs in the mid
60s.
.THURSDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 60s.
$$
WYZ140-292045-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
1235 PM MDT Thu Aug 28 2025
.THIS AFTERNOON...
Sky/weather.........Cloudy. Showers and thunderstorms likely.
Chance of precipitation 70 percent.
Chance of thunder...60 percent.
Max temperature.....54-59.
24 hr trend......4 degrees cooler.
Min humidity........77-83 percent.
24 hr trend......16 percent wetter.
20-foot winds.......West winds around 10 mph and gusty.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.65 percent.
Transport winds.....West around 15 mph.
Mixing Height.......2000-2800 ft agl.
Smoke dispersal.....Poor.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Showers likely and chance of thunderstorms in
the evening, then slight chance of showers
after midnight. Chance of precipitation 70
percent.
Chance of thunder...40 percent.
Min temperature.....43-48.
24 hr trend......2 degrees cooler.
Max humidity........86-92 percent.
24 hr trend......7 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....Southwest around 10 mph.
Chc of wetting rain.15 percent until 2400, then zero percent.
Transport winds.....West around 10 mph.
Mixing Height.......600-2600 ft agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy. Slight chance of showers in the
morning. Slight chance of thunderstorms late in
the morning. Slight chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....61-66.
24 hr trend......7 degrees warmer.
Min humidity........37-43 percent.
24 hr trend......41 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 5000-7000 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy. Slight chance of thunderstorms
early in the evening. Slight chance of showers
in the evening. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Min temperature.....38-43.
24 hr trend......3 degrees cooler.
Max humidity........80-86 percent.
24 hr trend......3 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest around 10 mph until 2400, then south.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 5 to 10 mph.
Mixing Height.......2800-4800 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SATURDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Slight chance of showers and thunderstorms in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....64-69.
24 hr trend......3 degrees warmer.
Min humidity........36-42 percent.
24 hr trend......7 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, 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.......1800-3800 ft agl until 1200, then 6000-8000 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.SATURDAY THROUGH LABOR DAY...Mostly clear. Lows 38 to 43. Highs
69 to 74. Winds generally less than 10 mph.
.TUESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the lower 70s.
Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows around 40. Highs in the upper 60s.
.THURSDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs around 70.
$$
WYZ415-292045-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
1235 PM MDT Thu Aug 28 2025
.THIS AFTERNOON...
Sky/weather.........Mostly cloudy. Showers and thunderstorms likely
early in the evening, then chance of showers
and thunderstorms early in the evening. Chance
of precipitation 70 percent.
Chance of thunder...60 percent.
Max temperature.....54-59.
24 hr trend......3 degrees cooler.
Min humidity........70-76 percent.
24 hr trend......1 percent wetter.
20-foot winds.......West winds around 10 mph with higher gusts.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.20 percent.
Transport winds.....West around 15 mph.
Mixing Height.......2600-3800 ft agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of thunderstorms in the
evening. Chance of showers through the night.
Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Min temperature.....41-46.
24 hr trend......1 degree cooler.
Max humidity........85-91 percent.
24 hr trend......11 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....West around 10 mph.
Chc of wetting rain.10 percent until 2400, then zero percent.
Transport winds.....West around 10 mph.
Mixing Height.......1000-3000 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Slight chance of showers early in the morning.
Slight chance of showers and thunderstorms late
in the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....63-68.
24 hr trend......8 degrees warmer.
Min humidity........36-42 percent.
24 hr trend......36 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy. Slight chance of thunderstorms
early in the evening. Slight chance of showers
in the evening. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Min temperature.....39-44.
24 hr trend......3 degrees cooler.
Max humidity........75-81 percent.
24 hr trend......12 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph and gusty until
2100, then downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest around 10 mph until 2400, then
northeast.
Chc of wetting rain.Zero percent.
Transport winds.....West 5 to 10 mph.
Mixing Height.......2800-4800 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor to fair until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....64-69.
24 hr trend......3 degrees warmer.
Min humidity........40-46 percent.
24 hr trend......4 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph. Gusts up to 20 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 6800-8800 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.SATURDAY THROUGH SUNDAY...Clear. Lows 40 to 45. Highs around 70.
Winds generally less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the mid 40s. Highs in the
lower 70s. Winds generally less than 10 mph.
.TUESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the lower 70s.
Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs around 70.
.THURSDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs around 70.
$$
WYZ416-292045-
West Wind River Mountains/East Zone Bridger Teton NF-
1235 PM MDT Thu Aug 28 2025
.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Chance of showers and
thunderstorms. Chance of precipitation 50
percent.
Chance of thunder...50 percent.
Max temperature.....52-57.
24 hr trend......3 degrees cooler.
Min humidity........65-71 percent.
24 hr trend......2 percent drier.
20-foot winds.......West winds around 10 mph with higher gusts.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.5 percent.
Transport winds.....West around 20 mph.
Mixing Height.......3200-4000 ft agl.
Smoke dispersal.....Fair.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the evening. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....40-45.
24 hr trend......2 degrees cooler.
Max humidity........81-87 percent.
24 hr trend......14 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 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....59-64.
24 hr trend......7 degrees warmer.
Min humidity........35-41 percent.
24 hr trend......31 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.......1600-3600 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy. Slight chance of thunderstorms
in the evening. Slight chance of showers
through the night. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Min temperature.....38-43.
24 hr trend......1 degree cooler.
Max humidity........75-81 percent.
24 hr trend......10 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph and gusty until
2100, then downslope/downvalley 4-7 mph.
Ridge top winds.....North around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North 10 to 15 mph.
Mixing Height.......2600-4600 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor to fair until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny. Chance of showers and slight
chance of thunderstorms in the afternoon.
Chance of precipitation 40 percent.
Chance of thunder...20 percent.
Max temperature.....60-65.
24 hr trend......2 degrees warmer.
Min humidity........36-42 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph. Gusts up to 20 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 6800-8800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.Forecast days 3 through 7......
.SATURDAY THROUGH LABOR DAY...Mostly clear. Lows 39 to 44. Highs
65 to 70. Winds generally less than 10 mph.
.TUESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the upper 60s.
Winds generally less than 10 mph.
.WEDNESDAY THROUGH THURSDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the lower 40s. Highs in the
mid 60s.
$$
WYZ288-292045-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
1235 PM MDT Thu Aug 28 2025
.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Chance of thunderstorms early in
the evening. Slight chance of showers through
the day. Slight chance of thunderstorms early
in the evening. Chance of precipitation 50
percent.
Chance of thunder...30 percent.
Max temperature.....57-62.
24 hr trend......1 degree warmer.
Min humidity........62-68 percent.
24 hr trend......10 percent drier.
20-foot winds.......West winds around 15 mph with gusts to around
30 mph.
Ridge top winds.....West around 20 mph.
Chc of wetting rain.5 percent.
Transport winds.....West around 20 mph.
Mixing Height.......3600-5400 ft agl.
Smoke dispersal.....Good.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the evening. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....42-47.
24 hr trend......Unchanged.
Max humidity........76-82 percent.
24 hr trend......24 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds around 10 mph. Gusts up to 25 mph
until 2400, then 15 mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......1200-3200 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers in the afternoon.
Slight chance of thunderstorms in the
afternoon. Chance of showers late in the
afternoon. Chance of precipitation 30 percent.
Chance of thunder...20 percent.
Max temperature.....61-66.
24 hr trend......2 degrees warmer.
Min humidity........35-41 percent.
24 hr trend......18 percent drier.
20-foot winds.......Northwest winds 10 to 15 mph with gusts to
around 25 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.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms in the evening, then
slight chance of showers after midnight. Chance
of precipitation 40 percent.
Chance of thunder...20 percent.
Min temperature.....41-46.
24 hr trend......1 degree cooler.
Max humidity........75-81 percent.
24 hr trend......2 percent drier.
Humidity recovery...Excellent.
20-foot winds.......North winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....Northwest around 10 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......2800-4800 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor to fair until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers in the morning, then
chance of showers and thunderstorms in the
afternoon. Chance of precipitation 40 percent.
Chance of thunder...30 percent.
Max temperature.....60-65.
24 hr trend......Unchanged.
Min humidity........38-44 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then north
around 10 mph. Gusts up to 20 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 6400-8400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good.
.Forecast days 3 through 7......
.SATURDAY THROUGH LABOR DAY...Mostly clear. Lows 43 to 48. Highs
66 to 71. Winds generally less than 10 mph.
.TUESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the upper 60s. Winds
generally less than 10 mph.
.WEDNESDAY...Partly cloudy with chance of showers and slight
chance of thunderstorms. Lows in the mid 40s. Highs in the mid
60s.
.THURSDAY...Partly cloudy. Slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 60s.
$$
WYZ414-292045-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
1235 PM MDT Thu Aug 28 2025
.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Chance of showers and
thunderstorms early in the evening, then slight
chance of showers and thunderstorms early in
the evening. Chance of precipitation 50
percent.
Chance of thunder...40 percent.
Max temperature.....54-59.
24 hr trend......3 degrees cooler.
Min humidity........63-69 percent.
24 hr trend......8 percent drier.
20-foot winds.......West winds around 10 mph with gusts to around
25 mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......3200-4400 ft agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the evening. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....42-47.
24 hr trend......Unchanged.
Max humidity........78-84 percent.
24 hr trend......18 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds around 10 mph and gusty until 2100,
then downslope/downvalley 4-7 mph.
Ridge top winds.....West around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Mostly sunny.
Chance of thunder...0 percent.
Max temperature.....62-67.
24 hr trend......7 degrees warmer.
Min humidity........34-40 percent.
24 hr trend......29 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph. Gusts up to 20 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 5800-7800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.FRIDAY NIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....38-43.
24 hr trend......1 degree cooler.
Max humidity........75-81 percent.
24 hr trend......13 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph with gusts to
around 25 mph until 2400, then
downslope/downvalley 4-7 mph.
Ridge top winds.....North 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......2600-4600 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor to fair until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. 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......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph with gusts to around 25
mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.Forecast days 3 through 7......
.SATURDAY THROUGH SUNDAY...Clear. Lows 41 to 46. Highs in the
lower 70s. Winds generally less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the mid 40s. Highs in the
lower 70s. Winds generally less than 10 mph.
.TUESDAY...Mostly clear. Slight chance of showers and
thunderstorms. 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 mid 40s. Highs in the lower 70s.
.THURSDAY...Mostly sunny. Highs in the lower 70s.
$$
WYZ277>279-292045-
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
1235 PM MDT Thu Aug 28 2025
.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms through the day. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....60-65.
24 hr trend......1 degree cooler.
Min humidity........47-53 percent.
24 hr trend......7 percent drier.
20-foot winds.......West winds around 15 mph with gusts to around
25 mph.
Ridge top winds.....West around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph.
Mixing Height.......5200-6800 ft agl.
Smoke dispersal.....Good to very good.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....45-50.
24 hr trend......Unchanged.
Max humidity........76-82 percent.
24 hr trend......18 percent drier.
Humidity recovery...Excellent.
20-foot winds.......West winds around 10 mph with gusts to around
25 mph until 0300, then downslope/downvalley
4-7 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......2200-4200 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor to fair until 2400, then poor.
.FRIDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms late
in the afternoon. Chance of precipitation 20
percent.
Chance of thunder...10 percent.
Max temperature.....64-69.
24 hr trend......3 degrees warmer.
Min humidity........33-39 percent.
24 hr trend......15 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then west
10 to 15 mph. Gusts up to 20 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.FRIDAY NIGHT...
Sky/weather.........Mostly clear. Slight chance of thunderstorms in
the evening. Slight chance of showers through
the night. Chance of precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....41-46.
24 hr trend......3 degrees cooler.
Max humidity........73-79 percent.
24 hr trend......1 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 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......3800-5800 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny. Slight chance of showers through
the day. Slight chance of thunderstorms in the
afternoon. Chance of precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....66-71.
24 hr trend......2 degrees warmer.
Min humidity........31-37 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph. Gusts up to 20 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 7400-9400 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Mostly clear. Lows in the mid 40s. Winds
generally less than 10 mph.
.SUNDAY...Clear. Lows in the mid 40s. Highs in the mid 70s. Winds
generally less than 10 mph.
.LABOR DAY...Mostly clear. Lows in the upper 40s. Highs in the
upper 70s. Winds generally less than 10 mph.
.TUESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the upper 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 70s.
.THURSDAY...Mostly sunny. Highs in the mid 70s.
$$
WYZ289-292045-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
1235 PM MDT Thu Aug 28 2025
.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms through the day. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....66-71.
24 hr trend......2 degrees warmer.
Min humidity........43-49 percent.
24 hr trend......12 percent drier.
20-foot winds.......West winds around 15 mph with gusts to around
30 mph.
Ridge top winds.....West around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph.
Mixing Height.......6000-7000 ft agl.
Smoke dispersal.....Very good.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms in the evening. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....50-55.
24 hr trend......Unchanged.
Max humidity........74-80 percent.
24 hr trend......19 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds 10 to 15 mph with gusts to
around 25 mph until 2400, then
downslope/downvalley 4-7 mph until 0300, then
west around 10 mph with gusts to around 15 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 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.
.FRIDAY...
Sky/weather.........Mostly sunny. Slight chance of showers late in
the afternoon. Slight chance of thunderstorms
late in the afternoon. Chance of showers late
in the afternoon. Chance of precipitation 30
percent.
Chance of thunder...20 percent.
Max temperature.....66-71.
24 hr trend......1 degree warmer.
Min humidity........29-35 percent.
24 hr trend......10 percent drier.
20-foot winds.......West winds 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy. Slight chance of thunderstorms
until early morning. Chance of showers through
the night. Chance of precipitation 40 percent.
Chance of thunder...20 percent.
Min temperature.....48-53.
24 hr trend......2 degrees cooler.
Max humidity........81-87 percent.
24 hr trend......11 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......North winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....North around 10 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....North 10 to 15 mph.
Mixing Height.......3200-5200 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SATURDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of showers through the day. Slight
chance of thunderstorms in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....65-70.
24 hr trend......1 degree cooler.
Min humidity........33-39 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph. Gusts up to 20 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 6600-8600 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Mostly clear. Lows in the upper 40s. Winds
generally less than 10 mph.
.SUNDAY...Clear. Lows in the upper 40s. Highs in the lower 70s.
Winds generally less than 10 mph.
.LABOR DAY...Mostly clear. Lows around 50. Highs in the mid 70s.
Winds generally less than 10 mph.
.TUESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the mid 70s. Winds
generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
.THURSDAY...Mostly sunny. Highs in the lower 70s.
$$
WYZ300-292045-
Casper Mountain-
1235 PM MDT Thu Aug 28 2025
.THIS AFTERNOON...
Sky/weather.........Partly cloudy. Chance of showers and
thunderstorms. Chance of precipitation 50
percent.
Chance of thunder...40 percent.
Max temperature.....65-70.
24 hr trend......3 degrees warmer.
Min humidity........45-51 percent.
24 hr trend......13 percent drier.
20-foot winds.......West winds around 15 mph with higher gusts.
Ridge top winds.....West around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph.
Mixing Height.......5200-6200 ft agl.
Smoke dispersal.....Good.
.TONIGHT...
Sky/weather.........Partly cloudy. Chance of showers and
thunderstorms in the evening. Chance of
precipitation 30 percent.
Chance of thunder...30 percent.
Min temperature.....51-56.
24 hr trend......1 degree warmer.
Max humidity........80-86 percent.
24 hr trend......15 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph.
Ridge top winds.....West around 10 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1800-3800 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Poor.
.FRIDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Slight chance of showers and thunderstorms
early in the afternoon. Chance of showers and
thunderstorms late in the afternoon. Chance of
precipitation 30 percent.
Chance of thunder...30 percent.
Max temperature.....65-70.
24 hr trend......Unchanged.
Min humidity........42-48 percent.
24 hr trend......5 percent drier.
20-foot winds.......West winds around 10 mph with higher gusts.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.FRIDAY NIGHT...
Sky/weather.........Partly cloudy. Chance of thunderstorms early in
the evening. Chance of showers through the
night. Slight chance of thunderstorms in the
late evening and early morning. Chance of
precipitation 40 percent.
Chance of thunder...30 percent.
Min temperature.....48-53.
24 hr trend......2 degrees cooler.
Max humidity........86-92 percent.
24 hr trend......6 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph. Gusts up to 20
mph until 2400, then 10 mph.
Ridge top winds.....North 5 to 10 mph.
Chc of wetting rain.7 percent.
Transport winds.....North around 10 mph.
Mixing Height.......2400-4400 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Poor to fair until 2400, then poor.
.SATURDAY...
Sky/weather.........Partly cloudy. Chance of showers through the
day. Slight chance of thunderstorms in the late
morning and early afternoon, then chance of
thunderstorms late in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....63-68.
24 hr trend......1 degree cooler.
Min humidity........51-57 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.5 percent until 1200, then 15 percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Mostly clear. Slight chance of showers and
thunderstorms in the evening. Lows in the upper 40s. Winds
generally less than 10 mph.
.SUNDAY...Mostly clear. Lows in the upper 40s. Highs in the upper
60s. Winds generally less than 10 mph.
.LABOR DAY...Clear. Lows in the upper 40s. Highs in the lower
70s. Winds generally less than 10 mph.
.TUESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the mid 60s.
.THURSDAY...Mostly sunny. Highs in the upper 60s.
$$