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.

unknown precip

44°F

7°C

Humidity 94%
Wind Speed W 3 MPH
Barometer NA
Dewpoint 42°F (6°C)
Visibility NA
Last update 10 Dec 11:45 AM MST
Extended Forecast for

12 Miles W Marysville MT

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

    NOW until 7:00pm Wed

    Wind Advisory

  • This Afternoon

    High: 35 °F

    Rain/Snow
    Likely and
    Windy

  • Tonight

    Tonight: A 40 percent chance of snow, mainly after 4am. The snow could be heavy at times.  Mostly cloudy, with a low around 30. Windy, with a west southwest wind 37 to 39 mph, with gusts as high as 55 mph.  New snow accumulation of 1 to 2 inches possible.

    Low: 30 °F

    Heavy Snow
    and Windy

  • Thursday

    Thursday: Snow.  Temperature falling to around 27 by 3pm. 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 5 inches possible.

    High: 31 °F

    Snow and
    Windy

  • Thursday Night

    Thursday Night: Snow. The snow could be heavy at times.  Low around 27. Breezy, with a west wind 21 to 25 mph, with gusts as high as 49 mph.  Chance of precipitation is 80%. New snow accumulation of 5 to 9 inches possible.

    Low: 27 °F

    Heavy Snow
    and Breezy

  • Friday

    Friday: Snow. The snow could be heavy at times.  High near 32. Breezy, with a west wind 18 to 23 mph, with gusts as high as 32 mph.  Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

    High: 32 °F

    Heavy Snow
    then Snow
    Likely and
    Breezy

  • Friday Night

    Friday Night: A 40 percent chance of snow.  Mostly cloudy, with a low around 27. Windy.  New snow accumulation of 1 to 3 inches possible.

    Low: 27 °F

    Chance Snow
    and Windy

  • Saturday

    Saturday: A 30 percent chance of snow, mainly before 11am.  Partly sunny, with a high near 31. Breezy.  New snow accumulation of less than a half inch possible.

    High: 31 °F

    Chance Snow
    and Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Snow likely before 2pm, then a chance of rain and snow. Snow level 8200 feet. Mostly cloudy, with a high near 35. Windy, with a west southwest wind 33 to 36 mph, with gusts as high as 60 mph. Chance of precipitation is 70%. Total daytime snow accumulation of 3 to 7 inches possible.
Tonight
A 40 percent chance of snow, mainly after 4am. The snow could be heavy at times. Mostly cloudy, with a low around 30. Windy, with a west southwest wind 37 to 39 mph, with gusts as high as 55 mph. New snow accumulation of 1 to 2 inches possible.
Thursday
Snow. Temperature falling to around 27 by 3pm. 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 5 inches possible.
Thursday Night
Snow. The snow could be heavy at times. Low around 27. Breezy, with a west wind 21 to 25 mph, with gusts as high as 49 mph. Chance of precipitation is 80%. New snow accumulation of 5 to 9 inches possible.
Friday
Snow. The snow could be heavy at times. High near 32. Breezy, with a west wind 18 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.
Friday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 27. Windy. New snow accumulation of 1 to 3 inches possible.
Saturday
A 30 percent chance of snow, mainly before 11am. Partly sunny, with a high near 31. Breezy. New snow accumulation of less than a half inch possible.
Saturday Night
Partly cloudy, with a low around 27.
Sunday
Mostly sunny, with a high near 33.
Sunday Night
Mostly cloudy, with a low around 28. Breezy.
Monday
A slight chance of snow. Partly sunny, with a high near 33. Breezy.
Monday Night
A chance of snow. Mostly cloudy, with a low around 27. Windy.
Tuesday
Snow likely. Mostly cloudy, with a high near 31. 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 am MST Dec 10, 2025
12pm MST Dec 10, 2025-6pm MST Dec 16, 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