Snow Squalls May Impact New Year's Eve Travel from the Great Lakes to the Mid-Atlantic; Heavy Rain & Isolated Severe Thunderstorms in Southern California

Snow squalls are likely to cross the Lower Great Lakes this evening and the Ohio Valley through the interior Northeast/northern Mid-Atlantic overnight, before potentially reaching the I-95 corridor from D.C. to New York City early New Year’s Day morning. Heavy rain and isolated severe thunderstorms will impact coastal southern California including Los Angeles tonight into early on New Year's Day. Read More >

Current conditions at

Garrison I-90 MP 174.4 (MTGAR)

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

NA

17°F

-8°C

Humidity 98%
Wind Speed W 0 MPH
Barometer NA
Dewpoint 17°F (-8°C)
Visibility NA
Last update 31 Dec 10:30 PM MST
Extended Forecast for

Garrison MT

  • Tonight

    Tonight: Partly cloudy, with a low around 15. Calm wind.

    Low: 15 °F

    Partly Cloudy

  • New Year's Day

    New Year's Day: Partly sunny, with a high near 33. Calm wind.

    High: 33 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 4am.  Otherwise, mostly cloudy, with a low around 26. Calm wind.

    Low: 26 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Mostly cloudy, with a high near 44. Calm wind becoming west southwest 5 to 7 mph in the afternoon.

    High: 44 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 28. West southwest wind around 6 mph becoming calm  in the evening.

    Low: 28 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 47.

    High: 47 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of rain.  Snow level 5200 feet rising to 5900 feet in the afternoon. Partly sunny, with a high near 45.

    High: 45 °F

    Slight Chance
    Rain

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 15. Calm wind.
New Year's Day
Partly sunny, with a high near 33. Calm wind.
Thursday Night
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 26. Calm wind.
Friday
Mostly cloudy, with a high near 44. Calm wind becoming west southwest 5 to 7 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 28. West southwest wind around 6 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 47.
Saturday Night
Mostly cloudy, with a low around 29.
Sunday
A slight chance of rain. Snow level 5200 feet rising to 5900 feet in the afternoon. Partly sunny, with a high near 45.
Sunday Night
Mostly cloudy, with a low around 25.
Monday
A slight chance of rain and snow. Snow level 4800 feet. Partly sunny, with a high near 42.
Monday Night
Mostly cloudy, with a low around 25.
Tuesday
Partly sunny, with a high near 40.
Tuesday Night
Mostly cloudy, with a low around 25.
Wednesday
A slight chance of snow. Mostly cloudy, with a high near 40.
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ABOUT THIS FORECAST

 
Point Forecast:
Garrison MT
 46.52°N 112.78°W (Elev. 4396 ft)
2:20 pm MST Dec 31, 2025
10pm MST Dec 31, 2025-6pm MST Jan 7, 2026
 
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Additional Resources

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