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

Garrison I-90 MP 174.4 (MTGAR)

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

NA

35°F

2°C

Humidity 68%
Wind Speed WNW 10 MPH
Barometer NA
Dewpoint 25°F (-4°C)
Visibility NA
Wind Chill27°F (-3°C)
Last update 05 Mar 09:00 PM MST
Extended Forecast for

12 Miles W Marysville MT

  • Tonight

    Tonight: A 40 percent chance of snow, mainly after 5am. Mostly cloudy, with a low around 20. Blustery, with a west northwest wind 22 to 25 mph, with gusts as high as 29 mph. Total nighttime snow accumulation of 1 to 3 inches possible.

    Low: 20 °F

    Chance Snow
    and Blustery

  • Friday

    Friday: A slight chance of snow before 10am, then a chance of snow after noon. Mostly cloudy, with a high near 24. Windy, with a west wind 24 to 30 mph, with gusts as high as 36 mph. Chance of precipitation is 40%. New snow accumulation of 1 to 2 inches possible.

    High: 24 °F

    Chance Snow
    and Windy

  • Friday Night

    Friday Night: A 30 percent chance of snow. Mostly cloudy, with a low around 22. Windy, with a west wind 25 to 30 mph, with gusts as high as 36 mph. New snow accumulation of around an inch possible.

    Low: 22 °F

    Chance Snow
    and Windy

  • Saturday

    Saturday: Snow likely, mainly before 11am. Mostly cloudy, with a high near 33. Windy, with a west wind around 33 mph, with gusts as high as 41 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 33 °F

    Snow Likely
    and Windy

  • Saturday Night

    Saturday Night: A 20 percent chance of snow before 11pm. Mostly cloudy, with a low around 32. Windy, with a west southwest wind 34 to 37 mph, with gusts as high as 41 mph.

    Low: 32 °F

    Windy. Slight
    Chance Snow
    then Mostly
    Cloudy

  • Sunday

    Sunday: A 40 percent chance of snow, mainly after 11am. Partly sunny, with a high near 37. Windy. New snow accumulation of less than a half inch possible.

    High: 37 °F

    Chance Snow
    and Windy

  • Sunday Night

    Sunday Night: Snow likely. Mostly cloudy, with a low around 28. Windy. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    Low: 28 °F

    Snow Likely
    and Windy

  • Monday

    Monday: Snow likely. Mostly cloudy, with a high near 30. Windy.

    High: 30 °F

    Snow Likely
    and Windy

  • Monday Night

    Monday Night: Snow likely. Mostly cloudy, with a low around 17. Windy.

    Low: 17 °F

    Snow Likely
    and Windy

Detailed Forecast

Tonight
A 40 percent chance of snow, mainly after 5am. Mostly cloudy, with a low around 20. Blustery, with a west northwest wind 22 to 25 mph, with gusts as high as 29 mph. Total nighttime snow accumulation of 1 to 3 inches possible.
Friday
A slight chance of snow before 10am, then a chance of snow after noon. Mostly cloudy, with a high near 24. Windy, with a west wind 24 to 30 mph, with gusts as high as 36 mph. Chance of precipitation is 40%. New snow accumulation of 1 to 2 inches possible.
Friday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 22. Windy, with a west wind 25 to 30 mph, with gusts as high as 36 mph. New snow accumulation of around an inch possible.
Saturday
Snow likely, mainly before 11am. Mostly cloudy, with a high near 33. Windy, with a west wind around 33 mph, with gusts as high as 41 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Saturday Night
A 20 percent chance of snow before 11pm. Mostly cloudy, with a low around 32. Windy, with a west southwest wind 34 to 37 mph, with gusts as high as 41 mph.
Sunday
A 40 percent chance of snow, mainly after 11am. Partly sunny, with a high near 37. Windy. New snow accumulation of less than a half inch possible.
Sunday Night
Snow likely. Mostly cloudy, with a low around 28. Windy. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Monday
Snow likely. Mostly cloudy, with a high near 30. Windy.
Monday Night
Snow likely. Mostly cloudy, with a low around 17. Windy.
Tuesday
Snow. Mostly cloudy, with a high near 19. Breezy.
Tuesday Night
Snow likely. Mostly cloudy, with a low around 15. Breezy.
Wednesday
Snow likely. Mostly cloudy, with a high near 27. Breezy.
Wednesday Night
Snow likely. Mostly cloudy, with a low around 24. Breezy.
Thursday
Snow likely. Mostly cloudy, with a high near 28. Windy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles W Marysville MT
 46.77°N 112.54°W (Elev. 8199 ft)
Last Update:
1:00 pm MST Mar 5, 2026
Forecast Valid:
9pm MST Mar 5, 2026-6pm MDT Mar 12, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation