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

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Hazardous Weather Conditions

Current conditions at

CANYON CREEK (CYFW1)

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

NA

38°F

3°C

Humidity 99%
Wind Speed SE 10 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Wind Chill31°F (-1°C)
Last update 25 Dec 10:52 AM PST
Extended Forecast for

Mount St Helens WA

Winter Weather Advisory December 26, 04:00am until December 27, 04:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Christmas Day

    Christmas Day: A 50 percent chance of snow, mainly after 4pm. Partly sunny, with a high near 31. Breezy, with a south wind 16 to 21 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph. Total daytime snow accumulation of 1 to 3 inches possible.

    High: 31 °F

    Chance Snow
    and Breezy

  • Tonight

    Tonight: A chance of snow between 1am and 4am, then snow showers after 4am. Steady temperature around 26. Breezy, with a south wind around 16 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    Low: 26 °F

    Breezy.
    Chance Snow
    then Snow
    Showers

  • Friday

    Friday: Snow showers. The snow could be heavy at times. Temperature falling to around 20 by 4pm. Windy, with a west southwest wind 16 to 22 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.

    High: 26 °F⇓

    Heavy Snow
    and Windy

  • Friday Night

    Friday Night: Snow showers. The snow could be heavy at times. Low around 20. Windy, with a west wind 25 to 29 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

    Low: 20 °F

    Heavy Snow
    and Windy

  • Saturday

    Saturday: A 50 percent chance of snow showers. Mostly cloudy, with a high near 22. Blustery, with a west northwest wind 9 to 18 mph, with gusts as high as 28 mph. New snow accumulation of less than one inch possible.

    High: 22 °F

    Chance Snow
    Showers and
    Blustery

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 17.

    Low: 17 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 27.

    High: 27 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 20. Breezy.

    Low: 20 °F

    Mostly Cloudy
    and Breezy

  • Monday

    Monday: Mostly cloudy, with a high near 31. Blustery.

    High: 31 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Cloudy

Detailed Forecast

Christmas Day
A 50 percent chance of snow, mainly after 4pm. Partly sunny, with a high near 31. Breezy, with a south wind 16 to 21 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph. Total daytime snow accumulation of 1 to 3 inches possible.
Tonight
A chance of snow between 1am and 4am, then snow showers after 4am. Steady temperature around 26. Breezy, with a south wind around 16 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Friday
Snow showers. The snow could be heavy at times. Temperature falling to around 20 by 4pm. Windy, with a west southwest wind 16 to 22 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.
Friday Night
Snow showers. The snow could be heavy at times. Low around 20. Windy, with a west wind 25 to 29 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.
Saturday
A 50 percent chance of snow showers. Mostly cloudy, with a high near 22. Blustery, with a west northwest wind 9 to 18 mph, with gusts as high as 28 mph. New snow accumulation of less than one inch possible.
Saturday Night
Mostly cloudy, with a low around 17.
Sunday
Partly sunny, with a high near 27.
Sunday Night
Mostly cloudy, with a low around 20. Breezy.
Monday
Mostly cloudy, with a high near 31. Blustery.
Monday Night
Mostly cloudy, with a low around 23. Blustery.
Tuesday
Mostly cloudy, with a high near 32. Breezy.
Tuesday Night
Mostly cloudy, with a low around 25. Blustery.
Wednesday
A chance of snow. Mostly cloudy, with a high near 33.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mount St Helens WA
 46.2°N 122.18°W (Elev. 5997 ft)
Last Update:
10:41 am PST Dec 25, 2025
Forecast Valid:
11am PST Dec 25, 2025-6pm PST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation