Significant and Catastrophic Flooding in the Pacific Northwest; Very Cold Temperatures in the Northern Plains

The atmospheric river over the Pacific Northwest will begin to subside today, but lingering rainfall will exacerbate ongoing catastrophic major river flooding, and landslides will continue across portions of western Washington and northwest Oregon for several days. Arctic air will plummet southward into the Northern Plains today, bringing cold air in the single digits to the region by Friday. Read More >

Current conditions at

Garrison I-90 MP 174.4 (MTGAR)

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

unknown precip

45°F

7°C

Humidity 89%
Wind Speed W 1 MPH
Barometer NA
Dewpoint 42°F (6°C)
Visibility NA
Last update 11 Dec 11:30 AM MST
Extended Forecast for

12 Miles W Marysville MT

Wind Advisory December 11, 11:55am until December 11, 07:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory December 11, 11:55am until December 11, 07:00pm

    NOW until 7:00pm Thu

    Wind Advisory

  • Today

    High: 31 °F

    Heavy Snow
    and Windy

  • Tonight

    Tonight: Snow. The snow could be heavy at times.  Low around 25. Breezy, with a west wind 17 to 25 mph, with gusts as high as 49 mph.  Chance of precipitation is 90%. New snow accumulation of 6 to 10 inches possible.

    Low: 25 °F

    Heavy Snow
    and Breezy

  • Friday

    Friday: Snow.  High near 32. West wind 16 to 21 mph, with gusts as high as 31 mph.  Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    High: 32 °F

    Snow

  • Friday Night

    Friday Night: A 50 percent chance of snow.  Mostly cloudy, with a low around 28. Windy, with a west wind 25 to 33 mph, with gusts as high as 40 mph.  New snow accumulation of less than a half inch possible.

    Low: 28 °F

    Chance Snow
    and Windy

  • Saturday

    Saturday: A 30 percent chance of snow before 11am.  Partly sunny, with a high near 32. Breezy, with a west southwest wind 13 to 22 mph, with gusts as high as 26 mph.  Little or no snow accumulation expected.

    High: 32 °F

    Chance Snow
    and Breezy
    then Partly
    Sunny

  • Saturday Night

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

    Low: 28 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 34. Breezy.

    High: 34 °F

    Mostly Sunny
    and Breezy
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 29. Breezy.

    Low: 29 °F

    Mostly Cloudy
    and Breezy

Detailed Forecast

Today
Snow. The snow could be heavy at times. High near 31. Windy, with a west wind around 30 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. Total daytime snow accumulation of 3 to 5 inches possible.
Tonight
Snow. The snow could be heavy at times. Low around 25. Breezy, with a west wind 17 to 25 mph, with gusts as high as 49 mph. Chance of precipitation is 90%. New snow accumulation of 6 to 10 inches possible.
Friday
Snow. High near 32. West wind 16 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Friday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 28. Windy, with a west wind 25 to 33 mph, with gusts as high as 40 mph. New snow accumulation of less than a half inch possible.
Saturday
A 30 percent chance of snow before 11am. Partly sunny, with a high near 32. Breezy, with a west southwest wind 13 to 22 mph, with gusts as high as 26 mph. Little or no snow accumulation expected.
Saturday Night
Partly cloudy, with a low around 28.
Sunday
Mostly sunny, with a high near 34. Breezy.
Sunday Night
Mostly cloudy, with a low around 29. Breezy.
Monday
A slight chance of snow after 11am. Partly sunny, with a high near 35. 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.
Tuesday Night
Snow likely. Mostly cloudy, with a low around 21. Windy.
Wednesday
Snow likely. Mostly cloudy, with a high near 26. Windy.
Basemap Options
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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 11, 2025
11am MST Dec 11, 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