Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

Current conditions at

Garrison I-90 MP 174.4 (MTGAR)

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

NA

6°F

-14°C

Humidity 80%
Wind Speed SE 1 MPH
Barometer NA
Dewpoint 1°F (-17°C)
Visibility NA
Last update 28 Dec 09:46 AM MST
Extended Forecast for

Garrison MT

  • Today

    Today: Sunny, with a high near 24. Calm wind becoming west northwest around 6 mph in the afternoon.

    High: 24 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 2. Light south wind.

    Low: 2 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 32. Light and variable wind.

    High: 32 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Patchy fog after 8pm.  Otherwise, increasing clouds, with a low around 17. Light west southwest wind.

    Low: 17 °F

    Patchy Fog

  • Tuesday

    Tuesday: Areas of fog before 11am.  Otherwise, partly sunny, with a high near 38. Calm wind.

    High: 38 °F

    Areas Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 21.

    Low: 21 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 22.

    Low: 22 °F

    Partly Cloudy

  • New Year's Day

    New Year's Day: Partly sunny, with a high near 44.

    High: 44 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 24. Calm wind becoming west northwest around 6 mph in the afternoon.
Tonight
Partly cloudy, with a low around 2. Light south wind.
Monday
Mostly sunny, with a high near 32. Light and variable wind.
Monday Night
Patchy fog after 8pm. Otherwise, increasing clouds, with a low around 17. Light west southwest wind.
Tuesday
Areas of fog before 11am. Otherwise, partly sunny, with a high near 38. Calm wind.
Tuesday Night
Mostly cloudy, with a low around 21.
Wednesday
Mostly sunny, with a high near 43.
Wednesday Night
Partly cloudy, with a low around 22.
New Year's Day
Partly sunny, with a high near 44.
Thursday Night
Mostly cloudy, with a low around 24.
Friday
A slight chance of rain and snow. Snow level rising to 4900 feet in the afternoon. Mostly cloudy, with a high near 43.
Friday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 20.
Saturday
A slight chance of snow. Partly sunny, with a high near 37.
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ABOUT THIS FORECAST

 
Point Forecast:
Garrison MT
 46.51°N 112.81°W (Elev. 4380 ft)
1:02 am MST Dec 28, 2025
10am MST Dec 28, 2025-6pm MST Jan 3, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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