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

40°F

4°C

Humidity 100%
Wind Speed SE 4 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Wind Chill37°F (3°C)
Last update 25 Dec 01:52 PM PST
Extended Forecast for

4 Miles SW 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 chance of rain showers before 5pm, then a chance of rain and snow showers. Snow level 4200 feet. Mostly cloudy, with a high near 39. Southeast wind around 7 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

    High: 39 °F

    Chance
    Rain/Snow

  • Tonight

    Tonight: A slight chance of rain and snow showers before midnight, then a chance of snow showers. Snow level 3400 feet. Mostly cloudy, with a low around 32. Southeast wind 6 to 8 mph. Chance of precipitation is 50%. New snow accumulation of less than one inch possible.

    Low: 32 °F

    Slight Chance
    Rain/Snow
    then Chance
    Snow Showers

  • Friday

    Friday: Snow. The snow could be heavy at times. Temperature falling to around 29 by 4pm. West wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

    High: 34 °F⇓

    Heavy Snow

  • Friday Night

    Friday Night: Snow. Low around 27. West wind around 14 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    Low: 27 °F

    Snow

  • Saturday

    Saturday: Snow likely before 10am, then a chance of snow showers after 10am. Mostly cloudy, with a high near 30. West wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 30 °F

    Snow Likely
    then Chance
    Snow Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 34.

    High: 34 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 38.

    High: 38 °F

    Mostly Cloudy

Detailed Forecast

Christmas Day
A chance of rain showers before 5pm, then a chance of rain and snow showers. Snow level 4200 feet. Mostly cloudy, with a high near 39. Southeast wind around 7 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Tonight
A slight chance of rain and snow showers before midnight, then a chance of snow showers. Snow level 3400 feet. Mostly cloudy, with a low around 32. Southeast wind 6 to 8 mph. Chance of precipitation is 50%. New snow accumulation of less than one inch possible.
Friday
Snow. The snow could be heavy at times. Temperature falling to around 29 by 4pm. West wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.
Friday Night
Snow. Low around 27. West wind around 14 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Saturday
Snow likely before 10am, then a chance of snow showers after 10am. Mostly cloudy, with a high near 30. West wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Saturday Night
Mostly cloudy, with a low around 25.
Sunday
Partly sunny, with a high near 34.
Sunday Night
Mostly cloudy, with a low around 27.
Monday
Mostly cloudy, with a high near 38.
Monday Night
Mostly cloudy, with a low around 30.
Tuesday
Mostly cloudy, with a high near 40.
Tuesday Night
A slight chance of rain. Mostly cloudy, with a low around 32.
Wednesday
A chance of rain. Mostly cloudy, with a high near 40.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Mount St Helens WA
 46.15°N 122.23°W (Elev. 3337 ft)
Last Update:
1:45 pm PST Dec 25, 2025
Forecast Valid:
2pm 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