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August 2026 Climate Summary

Hazardous Weather Conditions

Red Flag Warning in effect from September 3, 12:00 PM MDT until September 3, 09:00 PM MDT

Current conditions at

FISHTAIL (FSLM8)

Lat: 45.45806°NLon: 109.57139°WElev: 4550.0ft.

81°F

27°C

Humidity	21%
Wind Speed	SE 17 MPH
Barometer	NA
Dewpoint	37°F (3°C)
Visibility	NA
Heat Index	79°F (26°C)
Last update	02 Sep 01:22 PM MDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

12 Miles WSW Roscoe MT

Red Flag Warning September 3, 12:00pm until September 3, 09:00pm

Click here for hazard details and duration

Red Flag Warning

This Afternoon
High: 71 °F
Slight Chance
T-storms
Tonight
Low: 45 °F
Mostly Cloudy
Thursday
High: 69 °F
Mostly Sunny
Thursday Night
Low: 51 °F
Partly Cloudy
Friday
High: 73 °F
Sunny
Friday Night
Low: 48 °F
Mostly Clear
Saturday
High: 71 °F
Sunny
Saturday Night
Low: 48 °F
Partly Cloudy
then Slight
Chance
Showers
Sunday
High: 68 °F
Mostly Sunny
then Chance
Showers

Detailed Forecast

This Afternoon

A slight chance of showers and thunderstorms between 2pm and 3pm. Mostly sunny, with a high near 71. Southwest wind 16 to 22 mph, with gusts as high as 43 mph. Chance of precipitation is 20%.

Tonight

Mostly cloudy, with a low around 45. Southwest wind 17 to 22 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 46 mph.

Thursday

Mostly sunny, with a high near 69. Southwest wind 15 to 21 mph, with gusts as high as 45 mph.

Thursday Night

Partly cloudy, with a low around 51. South southwest wind around 9 mph.

Friday

Sunny, with a high near 73. Southwest wind 10 to 14 mph.

Friday Night

Mostly clear, with a low around 48. Southwest wind 5 to 9 mph.

Saturday

Sunny, with a high near 71. Southwest wind 5 to 8 mph becoming north in the morning.

Saturday Night

A 20 percent chance of showers after midnight. Partly cloudy, with a low around 48. North northeast wind 5 to 8 mph becoming light and variable after midnight.

Sunday

A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 68. Light and variable wind becoming east 5 to 7 mph in the morning.

Sunday Night

Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 50. East northeast wind around 7 mph becoming west southwest after midnight. Chance of precipitation is 70%.

Labor Day

Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 64. Southwest wind 8 to 16 mph. Chance of precipitation is 60%.

Monday Night

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 45. West southwest wind 17 to 23 mph.

Tuesday

A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 62. West southwest wind 23 to 28 mph decreasing to 13 to 18 mph in the afternoon.