Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Current conditions at

STILLWATER (STWM8)

Lat: 48.53944°NLon: 114.55944°WElev: 3116.0ft.

NA

30°F

-1°C

Humidity 100%
Wind Speed S 0 MPH
Barometer NA
Dewpoint 30°F (-1°C)
Visibility NA
Last update 10 Dec 04:00 AM MST
Extended Forecast for

12 Miles SSE Fortine MT

Flood Watch until December 11, 05:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch until December 11, 05:00pm

    NOW until 5:00pm Thu

    Flood Watch

  • Overnight

    Low: 26 °F

    Snow

  • Wednesday

    Wednesday: Snow before 11am, then rain.  Snow level rising to 6700 feet in the afternoon. High near 40. Southeast wind around 9 mph becoming west southwest in the afternoon. Winds could gust as high as 36 mph.  Chance of precipitation is 100%. New snow accumulation of around an inch possible.

    High: 40 °F

    Rain/Snow
    then Rain

  • Wednesday Night

    Wednesday Night: Rain.  Low around 36. Southwest wind 10 to 14 mph, with gusts as high as 44 mph.  Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 36 °F

    Rain

  • Thursday

    Thursday: Rain before 11am, then a chance of snow.  Snow level 5500 feet lowering to 4700 feet in the afternoon . High near 36. West southwest wind 10 to 14 mph, with gusts as high as 41 mph.  Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 36 °F

    Rain/Snow
    then Chance
    Snow

  • Thursday Night

    Thursday Night: A 40 percent chance of snow.  Mostly cloudy, with a low around 28. West wind around 6 mph, with gusts as high as 20 mph.  New snow accumulation of less than one inch possible.

    Low: 28 °F

    Chance Snow

  • Friday

    Friday: Snow.  High near 35. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    High: 35 °F

    Snow

  • Friday Night

    Friday Night: Rain and snow likely before 11pm, then a chance of snow between 11pm and 2am, then a chance of rain and snow after 2am.  Snow level rising to 5700 feet after midnight. Mostly cloudy, with a low around 31. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 31 °F

    Rain/Snow
    Likely

  • Saturday

    Saturday: A chance of rain and snow.  Snow level 5300 feet. Mostly cloudy, with a high near 35.

    High: 35 °F

    Chance
    Rain/Snow

Detailed Forecast

Overnight
Snow. Low around 26. South southeast wind around 9 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 1 to 2 inches possible.
Wednesday
Snow before 11am, then rain. Snow level rising to 6700 feet in the afternoon. High near 40. Southeast wind around 9 mph becoming west southwest in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 100%. New snow accumulation of around an inch possible.
Wednesday Night
Rain. Low around 36. Southwest wind 10 to 14 mph, with gusts as high as 44 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Rain before 11am, then a chance of snow. Snow level 5500 feet lowering to 4700 feet in the afternoon . High near 36. West southwest wind 10 to 14 mph, with gusts as high as 41 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Thursday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 28. West wind around 6 mph, with gusts as high as 20 mph. New snow accumulation of less than one inch possible.
Friday
Snow. High near 35. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Friday Night
Rain and snow likely before 11pm, then a chance of snow between 11pm and 2am, then a chance of rain and snow after 2am. Snow level rising to 5700 feet after midnight. Mostly cloudy, with a low around 31. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday
A chance of rain and snow. Snow level 5300 feet. Mostly cloudy, with a high near 35.
Saturday Night
A slight chance of rain and snow after 11pm. Snow level 5500 feet. Mostly cloudy, with a low around 30.
Sunday
A chance of rain and snow before 2pm, then a chance of rain. Snow level 4900 feet rising to 5500 feet in the afternoon. Mostly cloudy, with a high near 37.
Sunday Night
A chance of rain and snow. Snow level 5300 feet. Mostly cloudy, with a low around 33.
Monday
Rain and snow likely. Snow level 5100 feet rising to 5700 feet in the afternoon. Mostly cloudy, with a high near 38.
Monday Night
Rain and snow. Snow level 5700 feet. Cloudy, with a low around 33.
Tuesday
Rain and snow. Mostly cloudy, with a high near 36.
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles SSE Fortine MT
 48.61°N 114.78°W (Elev. 4705 ft)
1:02 am MST Dec 10, 2025
4am MST Dec 10, 2025-6pm MST Dec 16, 2025
 
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Additional Resources

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