National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Inclement Weather in the Pacific Northwest; Severe Thunderstorms in the Southeast; Impending Winter Storm

An approaching storm will bring rain and high elevation snow to Pacific Northwest through the weekend. Isolated severe thunderstorms are possible across parts of the Southeast today into this evening as a low strengthens over the Southeast. This system will form into a winter storm on Sunday that will bring heavy snow, high winds, and coastal flooding to the Mid-Atlantic and Northeast into Monday. Read More >

Hazardous Weather Conditions

Current conditions at

CANYON CREEK (CYFW1)

Lat: 45.92944°NLon: 122.20278°WElev: 2592.0ft.

NA

31°F

-1°C

Humidity 79%
Wind Speed ESE 8 MPH
Barometer NA
Dewpoint 25°F (-4°C)
Visibility NA
Wind Chill24°F (-4°C)
Last update 21 Feb 03:52 AM PST
Extended Forecast for

Mount St Helens WA

Winter Weather Advisory February 21, 10:52am until February 21, 10:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory February 21, 10:52am until February 21, 10:00pm

    NOW until 10:00pm Sat

    Winter Weather Advisory

  • Today

    High: 27 °F

    Heavy Snow
    and Very
    Windy

  • Tonight

    Tonight: Snow. The snow could be heavy at times. Low around 25. Very windy, with a southeast wind 37 to 39 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. New snow accumulation of 4 to 8 inches possible.

    Low: 25 °F

    Heavy Snow
    and Very
    Windy

  • Sunday

    Sunday: Snow, possibly mixed with sleet before 8am, then snow between 8am and 4pm, then snow likely, possibly mixed with sleet after 4pm. The snow could be heavy at times. High near 29. Very windy, with a south southeast wind 23 to 31 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 9 to 13 inches possible.

    High: 29 °F

    Snow/Sleet
    and Very
    Windy

  • Sunday Night

    Sunday Night: Snow, possibly mixed with sleet, becoming all snow after 7pm. Low around 27. Breezy, with a south southeast wind 17 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 3 to 5 inches possible.

    Low: 27 °F

    Breezy.
    Snow/Sleet
    then Snow

  • Monday

    Monday: Snow. The snow could be heavy at times. High near 30. South southeast wind around 14 mph, with gusts as high as 18 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.

    High: 30 °F

    Heavy Snow

  • Monday Night

    Monday Night: Snow. The snow could be heavy at times. Low around 27. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

    Low: 27 °F

    Heavy Snow

  • Tuesday

    Tuesday: Snow. The snow could be heavy at times. High near 30. Windy. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

    High: 30 °F

    Heavy Snow
    and Windy

  • Tuesday Night

    Tuesday Night: Snow. Mostly cloudy, with a low around 23.

    Low: 23 °F

    Snow

Detailed Forecast

Today
Snow, mainly before noon. The snow could be heavy at times. High near 27. Very windy, with a southeast wind 34 to 37 mph, with gusts as high as 43 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 8 to 12 inches possible.
Tonight
Snow. The snow could be heavy at times. Low around 25. Very windy, with a southeast wind 37 to 39 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. New snow accumulation of 4 to 8 inches possible.
Sunday
Snow, possibly mixed with sleet before 8am, then snow between 8am and 4pm, then snow likely, possibly mixed with sleet after 4pm. The snow could be heavy at times. High near 29. Very windy, with a south southeast wind 23 to 31 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 9 to 13 inches possible.
Sunday Night
Snow, possibly mixed with sleet, becoming all snow after 7pm. Low around 27. Breezy, with a south southeast wind 17 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 3 to 5 inches possible.
Monday
Snow. The snow could be heavy at times. High near 30. South southeast wind around 14 mph, with gusts as high as 18 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.
Monday Night
Snow. The snow could be heavy at times. Low around 27. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.
Tuesday
Snow. The snow could be heavy at times. High near 30. Windy. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.
Tuesday Night
Snow. Mostly cloudy, with a low around 23.
Wednesday
Snow. Mostly cloudy, with a high near 28. Breezy.
Wednesday Night
Snow likely. The snow could be heavy at times. Mostly cloudy, with a low around 23.
Thursday
Snow. The snow could be heavy at times. Mostly cloudy, with a high near 31. Breezy.
Thursday Night
Snow. The snow could be heavy at times. Mostly cloudy, with a low around 26. Breezy.
Friday
Snow. The snow could be heavy at times. Mostly cloudy, with a high near 29. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mount St Helens WA
 46.2°N 122.21°W (Elev. 6598 ft)
Last Update:
10:41 am PST Feb 21, 2026
Forecast Valid:
10am PST Feb 21, 2026-6pm PST Feb 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation