Tracking Late Season Winter Storms; Unusual Early-Season Heat Wave in the Southwest

Heavy snow and high winds continue in the Great Lakes and Northeast. A moderate atmospheric river will continue to bring heavy precipitation to the Pacific Northwest and northern Rockies. A major winter storm will develop across the northern High Plains tonight into Saturday and rapidly strengthen as it moves into the Great Lakes on Sunday. Above-average temperatures expected in the Southwest. Read More >

Current conditions at

Garrison I-90 MP 174.4 (MTGAR)

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

unknown precip

32°F

0°C

Humidity NA
Wind Speed NW 0 MPH
Barometer NA
Dewpoint N/A
Visibility NA
Last update NA
Extended Forecast for

Garrison MT

Winter Weather Advisory until March 15, 12:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory until March 15, 12:00am

    NOW until 12:00am Sun

    Winter Weather Advisory

  • Tonight

    Low: 33 °F

    Rain/Snow
    then Snow

  • Saturday

    Saturday: Rain and snow, becoming all snow after 10am.  High near 42. Breezy, with a west northwest wind 5 to 10 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 43 mph.  Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 42 °F

    Rain/Snow
    then Snow and
    Breezy

  • Saturday Night

    Saturday Night: Snow, mainly before midnight.  Low around 9. Northwest wind 13 to 18 mph becoming light west northwest  after midnight. Winds could gust as high as 34 mph.  Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    Low: 9 °F

    Snow then
    Chance Snow

  • Sunday

    Sunday: Partly sunny, with a high near 35. Calm wind becoming west northwest 5 to 7 mph in the afternoon.

    High: 35 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 40 percent chance of snow, mainly after midnight.  Mostly cloudy, with a low around 21. West wind around 6 mph becoming calm  in the evening.  Little or no snow accumulation expected.

    Low: 21 °F

    Chance Snow

  • Monday

    Monday: A chance of snow before 9am, then a chance of rain and snow between 9am and noon, then a chance of rain after noon.  Snow level rising to 7700 feet in the afternoon. Mostly cloudy, with a high near 50. Chance of precipitation is 50%. Little or no snow accumulation expected.

    High: 50 °F

    Chance
    Rain/Snow
    then Chance
    Rain

  • Monday Night

    Monday Night: A 20 percent chance of rain.  Mostly cloudy, with a low around 38.

    Low: 38 °F

    Slight Chance
    Rain

  • Tuesday

    Tuesday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

Detailed Forecast

Tonight
Rain and snow, becoming all snow after 9pm. Low around 33. West northwest wind 5 to 7 mph becoming south after midnight. Chance of precipitation is 90%. Little or no snow accumulation expected.
Saturday
Rain and snow, becoming all snow after 10am. High near 42. Breezy, with a west northwest wind 5 to 10 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 43 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Saturday Night
Snow, mainly before midnight. Low around 9. Northwest wind 13 to 18 mph becoming light west northwest after midnight. Winds could gust as high as 34 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Sunday
Partly sunny, with a high near 35. Calm wind becoming west northwest 5 to 7 mph in the afternoon.
Sunday Night
A 40 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 21. West wind around 6 mph becoming calm in the evening. Little or no snow accumulation expected.
Monday
A chance of snow before 9am, then a chance of rain and snow between 9am and noon, then a chance of rain after noon. Snow level rising to 7700 feet in the afternoon. Mostly cloudy, with a high near 50. Chance of precipitation is 50%. Little or no snow accumulation expected.
Monday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 38.
Tuesday
Mostly sunny, with a high near 58.
Tuesday Night
Partly cloudy, with a low around 39.
Wednesday
Mostly sunny, with a high near 63.
Wednesday Night
Partly cloudy, with a low around 38.
Thursday
Mostly sunny, with a high near 66.
Thursday Night
Partly cloudy, with a low around 40.
Friday
Mostly sunny, with a high near 68.
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ABOUT THIS FORECAST

 
Point Forecast:
Garrison MT
 46.51°N 112.81°W (Elev. 4380 ft)
2:00 pm MDT Mar 13, 2026
8pm MDT Mar 13, 2026-6pm MDT Mar 20, 2026
 
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Additional Resources

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Hourly Weather Forecast

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