Tracking Atmospheric River in the Northwest U.S. and Clipper with Winter Weather in the Northeast U.S.

A prolonged atmospheric river will continue to bring gusty winds, heavy rainfall which may lead to urban and river flooding with possible landslides, and heavy inter-mountain snow over the Pacific Northwest into the northern Rockies through Thursday. A clipper will cross the Great Lakes and Northeast U.S. into Thursday with areas of moderate to heavy snow and mixed wintry precipitation. Read More >

Current conditions at

Garrison I-90 MP 174.4 (MTGAR)

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

NA

52°F

11°C

Humidity 58%
Wind Speed NNW 8 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Last update 10 Dec 05:00 PM MST
Extended Forecast for

12 Miles W Marysville MT

Wind Advisory December 10, 05:28pm until December 10, 07:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory December 10, 05:28pm until December 10, 07:00pm

    NOW until 7:00pm Wed

    Wind Advisory

  • This Afternoon

    High: 35 °F

    Chance Snow
    and Windy

  • Tonight

    Tonight: A chance of snow before 11pm, then a chance of snow after 2am.  Mostly cloudy, with a low around 30. Windy, with a west southwest wind 37 to 39 mph, with gusts as high as 60 mph.  Chance of precipitation is 40%. New snow accumulation of less than one inch possible.

    Low: 30 °F

    Chance Snow
    and Windy

  • Thursday

    Thursday: Snow, mainly after 9am. The snow could be heavy at times.  Temperature falling to around 25 by 4pm. Windy, with a west wind 30 to 38 mph, with gusts as high as 55 mph.  Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

    High: 31 °F

    Heavy Snow
    and Windy

  • Thursday Night

    Thursday Night: Snow. The snow could be heavy at times.  Low around 25. Breezy, with a west wind 20 to 25 mph, with gusts as high as 49 mph.  Chance of precipitation is 90%. New snow accumulation of 4 to 8 inches possible.

    Low: 25 °F

    Heavy Snow
    and Breezy

  • Friday

    Friday: Snow.  High near 32. Breezy, with a west wind 20 to 22 mph, with gusts as high as 30 mph.  Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    High: 32 °F

    Snow and
    Breezy

  • Friday Night

    Friday Night: A 50 percent chance of snow.  Mostly cloudy, with a low around 27. Windy.  New snow accumulation of around an inch possible.

    Low: 27 °F

    Chance Snow
    and Windy

  • Saturday

    Saturday: A 20 percent chance of snow before 11am.  Partly sunny, with a high near 32. Breezy.

    High: 32 °F

    Slight Chance
    Snow and
    Breezy then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
A 40 percent chance of snow. Mostly cloudy, with a high near 35. Windy, with a west southwest wind around 37 mph, with gusts as high as 55 mph. Total daytime snow accumulation of 3 to 5 inches possible.
Tonight
A chance of snow before 11pm, then a chance of snow after 2am. Mostly cloudy, with a low around 30. Windy, with a west southwest wind 37 to 39 mph, with gusts as high as 60 mph. Chance of precipitation is 40%. New snow accumulation of less than one inch possible.
Thursday
Snow, mainly after 9am. The snow could be heavy at times. Temperature falling to around 25 by 4pm. Windy, with a west wind 30 to 38 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.
Thursday Night
Snow. The snow could be heavy at times. Low around 25. Breezy, with a west wind 20 to 25 mph, with gusts as high as 49 mph. Chance of precipitation is 90%. New snow accumulation of 4 to 8 inches possible.
Friday
Snow. High near 32. Breezy, with a west wind 20 to 22 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Friday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 27. Windy. New snow accumulation of around an inch possible.
Saturday
A 20 percent chance of snow before 11am. Partly sunny, with a high near 32. Breezy.
Saturday Night
Partly cloudy, with a low around 28.
Sunday
Mostly sunny, with a high near 34.
Sunday Night
Mostly cloudy, with a low around 28. Breezy.
Monday
A slight chance of snow. Partly sunny, with a high near 35. Breezy.
Monday Night
A chance of snow. Mostly cloudy, with a low around 29. Windy.
Tuesday
Snow likely. Mostly cloudy, with a high near 31. Windy.
Tuesday Night
Snow likely. Mostly cloudy, with a low around 23. Windy.
Wednesday
Snow likely. Mostly cloudy, with a high near 27. Windy.
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles W Marysville MT
 46.77°N 112.54°W (Elev. 8199 ft)
1:02 pm MST Dec 10, 2025
5pm MST Dec 10, 2025-6pm MST Dec 17, 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