National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Areas of Severe Thunderstorms, Excessive Rainfall, and Extreme Heat Saturday

Severe thunderstorms capable of damaging winds will be possible from the Ozark Plateau east into the Tennessee Valley Saturday. Rounds of heavy thunderstorms ahead of a slow moving front will continue locally heavy rainfall and scattered flash flooding potential from the Ozarks to the Ohio and Tennessee Valleys Saturday. Extreme heat will continue for the Intermountain West and Plains. Read More >

Hazardous Weather Conditions

Current conditions at

Garrison I-90 MP 174.4 (MTGAR)

Lat: 46.52361°NLon: 112.80843°WElev: 4327.0ft.

NA

54°F

12°C

Humidity 84%
Wind Speed WSW 0 MPH
Barometer NA
Dewpoint 49°F (9°C)
Visibility NA
Last update 11 Jul 03:45 AM MDT
Extended Forecast for

Garrison MT

Fire Weather Watch July 12, 12:00pm until July 12, 09:00pm
Click here for hazard details and duration
Fire Weather Watch

  • Today

    Today: Sunny, with a high near 92. East southeast wind 5 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 23 mph.

    High: 92 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 47. Northwest wind 9 to 14 mph becoming light and variable in the evening. Winds could gust as high as 18 mph.

    Low: 47 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Partly sunny, with a high near 92. Light and variable wind becoming west northwest 6 to 11 mph in the morning. Winds could gust as high as 23 mph.

    High: 92 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 57. Northwest wind 6 to 11 mph becoming light and variable in the evening.

    Low: 57 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 92. Calm wind becoming west northwest around 5 mph in the afternoon.

    High: 92 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60.

    Low: 60 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 86. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 86 °F

    Partly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before midnight, then a chance of rain after midnight. Mostly cloudy, with a low around 57.

    Low: 57 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of rain before noon, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 84.

    High: 84 °F

    Chance Rain
    then Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 92. East southeast wind 5 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 23 mph.
Tonight
Increasing clouds, with a low around 47. Northwest wind 9 to 14 mph becoming light and variable in the evening. Winds could gust as high as 18 mph.
Sunday
Partly sunny, with a high near 92. Light and variable wind becoming west northwest 6 to 11 mph in the morning. Winds could gust as high as 23 mph.
Sunday Night
Mostly cloudy, with a low around 57. Northwest wind 6 to 11 mph becoming light and variable in the evening.
Monday
Mostly sunny, with a high near 92. Calm wind becoming west northwest around 5 mph in the afternoon.
Monday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60.
Tuesday
A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 86. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers likely and possibly a thunderstorm before midnight, then a chance of rain after midnight. Mostly cloudy, with a low around 57.
Wednesday
A chance of rain before noon, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 84.
Wednesday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 57.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 55.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Garrison MT
 46.52°N 112.78°W (Elev. 4396 ft)
Last Update:
3:41 am MDT Jul 11, 2026
Forecast Valid:
4am MDT Jul 11, 2026-6pm MDT Jul 17, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation