Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds in the North-Central U.S.

A prolonged atmospheric river will continue impacting the Pacific Northwest with heavy rainfall which has lead to areas of urban and river flooding along with gusty winds into Thursday. A clipper will bring heavy snow, some mixed wintry precipitation, and gusty to high winds across the northern Plains, Upper Midwest, and the Great Lakes into Thursday morning. Read More >

Current conditions at

WEST GLACIER (WGRM8)

Lat: 48.51061°NLon: 113.99677°WElev: 3165.0ft.

NA

44°F

7°C

Humidity 61%
Wind Speed SW 4 MPH
Barometer NA
Dewpoint 31°F (-1°C)
Visibility NA
Wind Chill42°F (6°C)
Last update 09 Dec 12:12 PM MST
Extended Forecast for

16 Miles WSW St Mary MT

Flood Watch until December 11, 05:00pm
Winter Weather Advisory December 10, 12:00am until December 10, 11:00am
Click here for hazard details and duration
Flood Watch
Winter Weather Advisory
  •  
    Flood Watch until December 11, 05:00pm

    NOW until 5:00pm Thu

    Flood Watch

  • This Afternoon

    High: 29 °F

    Mostly Cloudy
    and Breezy

  • Tonight

    Tonight: Snow, mainly after 2am. The snow could be heavy at times.  Low around 20. Southwest wind 15 to 21 mph, with gusts as high as 25 mph.  Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    Low: 20 °F

    Mostly Cloudy
    then Heavy
    Snow

  • Wednesday

    Wednesday: Snow. The snow could be heavy at times.  High near 34. Breezy, with a southwest wind 25 to 28 mph, with gusts as high as 36 mph.  Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.

    High: 34 °F

    Heavy Snow
    and Breezy

  • Wednesday Night

    Wednesday Night: Snow. The snow could be heavy at times.  Low around 26. Breezy, with a west southwest wind 25 to 28 mph, with gusts as high as 33 mph.  Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.

    Low: 26 °F

    Heavy Snow
    and Breezy

  • Thursday

    Thursday: Snow. The snow could be heavy at times.  High near 28. Breezy, with a west wind 23 to 28 mph decreasing to 14 to 19 mph in the afternoon. Winds could gust as high as 33 mph.  Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.

    High: 28 °F

    Heavy Snow
    and Breezy

  • Thursday Night

    Thursday Night: Snow.  Low around 17. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    Low: 17 °F

    Snow

  • Friday

    Friday: Snow. The snow could be heavy at times.  High near 24. Chance of precipitation is 90%. New snow accumulation of 5 to 9 inches possible.

    High: 24 °F

    Heavy Snow

  • Friday Night

    Friday Night: Snow. The snow could be heavy at times.  Mostly cloudy, with a low around 13.

    Low: 13 °F

    Heavy Snow

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 29. Breezy, with a west southwest wind 24 to 26 mph, with gusts as high as 36 mph.
Tonight
Snow, mainly after 2am. The snow could be heavy at times. Low around 20. Southwest wind 15 to 21 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Wednesday
Snow. The snow could be heavy at times. High near 34. Breezy, with a southwest wind 25 to 28 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.
Wednesday Night
Snow. The snow could be heavy at times. Low around 26. Breezy, with a west southwest wind 25 to 28 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.
Thursday
Snow. The snow could be heavy at times. High near 28. Breezy, with a west wind 23 to 28 mph decreasing to 14 to 19 mph in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.
Thursday Night
Snow. Low around 17. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Friday
Snow. The snow could be heavy at times. High near 24. Chance of precipitation is 90%. New snow accumulation of 5 to 9 inches possible.
Friday Night
Snow. The snow could be heavy at times. Mostly cloudy, with a low around 13.
Saturday
A chance of snow. Mostly cloudy, with a high near 25.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 22.
Sunday
A chance of snow. Mostly cloudy, with a high near 26.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 22.
Monday
A chance of snow. Mostly cloudy, with a high near 30.
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ABOUT THIS FORECAST

 
Point Forecast:
16 Miles WSW St Mary MT
 48.69°N 113.78°W (Elev. 8153 ft)
1:02 pm MST Dec 9, 2025
1pm MST Dec 9, 2025-6pm MST Dec 15, 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