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

46°F

8°C

Humidity 47%
Wind Speed WSW 2 MPH
Barometer NA
Dewpoint 27°F (-3°C)
Visibility NA
Last update 02 Mar 12:30 PM MST
Extended Forecast for

12 Miles W Marysville MT

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 33. West northwest wind 16 to 18 mph, with gusts as high as 24 mph.

    High: 33 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 24. West wind around 18 mph, with gusts as high as 21 mph.

    Low: 24 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 39. Southwest wind 17 to 20 mph, with gusts as high as 24 mph.

    High: 39 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 27. Southwest wind 18 to 20 mph, with gusts as high as 23 mph.

    Low: 27 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Snow likely, mainly after 11am. Mostly cloudy, with a high near 35. West southwest wind around 18 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    High: 35 °F

    Snow Likely

  • Wednesday Night

    Wednesday Night: Snow. Low around 25. Breezy. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    Low: 25 °F

    Breezy. Snow
    then Snow
    Likely

  • Thursday

    Thursday: Snow likely. Mostly cloudy, with a high near 27. Windy. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 27 °F

    Snow Likely
    and Windy

  • Thursday Night

    Thursday Night: Snow likely. Mostly cloudy, with a low around 23. Breezy.

    Low: 23 °F

    Snow Likely
    and Breezy

  • Friday

    Friday: A chance of snow. Mostly cloudy, with a high near 27. Breezy.

    High: 27 °F

    Chance Snow
    and Breezy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 33. West northwest wind 16 to 18 mph, with gusts as high as 24 mph.
Tonight
Mostly clear, with a low around 24. West wind around 18 mph, with gusts as high as 21 mph.
Tuesday
Mostly sunny, with a high near 39. Southwest wind 17 to 20 mph, with gusts as high as 24 mph.
Tuesday Night
Partly cloudy, with a low around 27. Southwest wind 18 to 20 mph, with gusts as high as 23 mph.
Wednesday
Snow likely, mainly after 11am. Mostly cloudy, with a high near 35. West southwest wind around 18 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Wednesday Night
Snow. Low around 25. Breezy. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Thursday
Snow likely. Mostly cloudy, with a high near 27. Windy. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Thursday Night
Snow likely. Mostly cloudy, with a low around 23. Breezy.
Friday
A chance of snow. Mostly cloudy, with a high near 27. Breezy.
Friday Night
A chance of snow, mainly before 11pm. Partly cloudy, with a low around 24. Breezy.
Saturday
A chance of snow. Mostly cloudy, with a high near 33. Breezy.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 31. Windy.
Sunday
A chance of snow. Mostly cloudy, with a high near 34. Windy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
12 Miles W Marysville MT
 46.77°N 112.54°W (Elev. 8199 ft)
Last Update:
11:27 am MST Mar 2, 2026
Forecast Valid:
12pm MST Mar 2, 2026-6pm MDT Mar 8, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation