Heavy Snow from the Midwest into the Great Lakes; Locally Heavy Rain in the Western Gulf Coast

A significant winter storm will produce a broad area of moderate to heavy snow from the Midwest through the western Great Lakes. Significant snow accumulations of 6-12 inches, and locally more than 1 foot, and gusty wind may cause hazardous travel conditions. Thunderstorms, some severe, and showers may produce locally heavy rain and isolated flash flooding along the western Gulf Coast. Read More >

Current conditions at

Garrison I-90 MP 174.4 (MTGAR)

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

NA

10°F

-12°C

Humidity 88%
Wind Speed ENE 2 MPH
Barometer NA
Dewpoint 7°F (-14°C)
Visibility NA
Last update 29 Nov 11:45 PM MST
Extended Forecast for

12 Miles W Marysville MT

  • Overnight

    Overnight: Mostly cloudy, with a low around 8. Wind chill values as low as -4. East wind around 11 mph.

    Low: 8 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 15. Wind chill values as low as -6. East southeast wind 6 to 10 mph becoming west northwest in the afternoon.

    High: 15 °F

    Sunny

  • Sunday Night

    Sunday Night: Patchy blowing snow after 2am. Partly cloudy, with a low around 9. Wind chill values as low as -8. West wind 10 to 17 mph, with gusts as high as 20 mph.

    Low: 9 °F

    Partly Cloudy
    then Patchy
    Blowing Snow

  • Monday

    Monday: Patchy blowing snow before 8am. Partly sunny, with a high near 19. Wind chill values as low as -9. West wind 15 to 20 mph, with gusts as high as 25 mph.

    High: 19 °F

    Patchy
    Blowing Snow
    then Mostly
    Cloudy

  • Monday Night

    Monday Night: A 50 percent chance of snow, mainly after 11pm.  Patchy blowing snow after 8pm. Mostly cloudy, with a low around 17. Breezy, with a west southwest wind 18 to 25 mph, with gusts as high as 28 mph.  New snow accumulation of less than a half inch possible.

    Low: 17 °F

    Chance Snow
    and Patchy
    Blowing Snow

  • Tuesday

    Tuesday: Snow.  Patchy blowing snow before 8am. High near 20. Breezy.  Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    High: 20 °F

    Snow and
    Patchy
    Blowing Snow

  • Tuesday Night

    Tuesday Night: Snow likely, mainly before 11pm.  Cloudy, with a low around 11. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 11 °F

    Snow Likely
    then Chance
    Snow

  • Wednesday

    Wednesday: A slight chance of snow before 11am.  Partly sunny, with a high near 16.

    High: 16 °F

    Slight Chance
    Snow then
    Partly Sunny

  • Wednesday Night

    Wednesday Night: Patchy blowing snow after 11pm. Mostly cloudy, with a low around 13. Breezy.

    Low: 13 °F

    Patchy
    Blowing Snow
    and Breezy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 8. Wind chill values as low as -4. East wind around 11 mph.
Sunday
Sunny, with a high near 15. Wind chill values as low as -6. East southeast wind 6 to 10 mph becoming west northwest in the afternoon.
Sunday Night
Patchy blowing snow after 2am. Partly cloudy, with a low around 9. Wind chill values as low as -8. West wind 10 to 17 mph, with gusts as high as 20 mph.
Monday
Patchy blowing snow before 8am. Partly sunny, with a high near 19. Wind chill values as low as -9. West wind 15 to 20 mph, with gusts as high as 25 mph.
Monday Night
A 50 percent chance of snow, mainly after 11pm. Patchy blowing snow after 8pm. Mostly cloudy, with a low around 17. Breezy, with a west southwest wind 18 to 25 mph, with gusts as high as 28 mph. New snow accumulation of less than a half inch possible.
Tuesday
Snow. Patchy blowing snow before 8am. High near 20. Breezy. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Tuesday Night
Snow likely, mainly before 11pm. Cloudy, with a low around 11. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Wednesday
A slight chance of snow before 11am. Partly sunny, with a high near 16.
Wednesday Night
Patchy blowing snow after 11pm. Mostly cloudy, with a low around 13. Breezy.
Thursday
A chance of snow. Patchy blowing snow before 11am. Mostly cloudy, with a high near 22. Breezy.
Thursday Night
A chance of snow. Patchy blowing snow. Mostly cloudy, with a low around 19. Breezy.
Friday
Snow likely. Mostly cloudy, with a high near 28. Breezy.
Friday Night
Snow likely. Mostly cloudy, with a low around 24. Windy.
Saturday
Snow likely. Mostly cloudy, with a high near 27. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles W Marysville MT
 46.77°N 112.54°W (Elev. 8199 ft)
2:51 pm MST Nov 29, 2025
12am MST Nov 30, 2025-6pm MST Dec 6, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database