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

SAWMILL FLATS (MEFW1)

Lat: 46.9675°NLon: 121.08444°WElev: 3000.0ft.

NA

34°F

1°C

Humidity 100%
Wind Speed W 1 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Last update 24 Dec 11:25 AM PST
Extended Forecast for

Chinook Pass WA

  • Today

    Today: Rain and snow, becoming all snow after 1pm. Patchy blowing snow. Temperature falling to around 30 by 5pm. Breezy, with a south wind around 23 mph, with gusts as high as 50 mph. Chance of precipitation is 90%. Total daytime snow accumulation of less than one inch possible.

    High: 35 °F⇓

    Rain/Snow and
    Patchy
    Blowing Snow

  • Tonight

    Tonight: A chance of snow before 7pm, then a chance of snow after 4am. Mostly cloudy, with a low around 22. Southwest wind 6 to 15 mph becoming east after midnight. Winds could gust as high as 33 mph. Chance of precipitation is 30%.

    Low: 22 °F

    Chance Snow

  • Christmas Day

    Christmas Day: Snow, mainly after 10am. High near 33. South wind 10 to 14 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    High: 33 °F

    Snow

  • Thursday Night

    Thursday Night: Snow likely. Mostly cloudy, with a low around 24. West wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 24 °F

    Snow Likely

  • Friday

    Friday: Snow. High near 30. West wind 11 to 15 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    High: 30 °F

    Snow

  • Friday Night

    Friday Night: Snow likely, mainly before 10pm. Mostly cloudy, with a low around 19. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    Low: 19 °F

    Snow Likely
    then Chance
    Snow

  • Saturday

    Saturday: A 20 percent chance of snow before 10am. Partly sunny, with a high near 26.

    High: 26 °F

    Slight Chance
    Snow then
    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 18.

    Low: 18 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 34.

    High: 34 °F

    Mostly Cloudy

Detailed Forecast

Today
Rain and snow, becoming all snow after 1pm. Patchy blowing snow. Temperature falling to around 30 by 5pm. Breezy, with a south wind around 23 mph, with gusts as high as 50 mph. Chance of precipitation is 90%. Total daytime snow accumulation of less than one inch possible.
Tonight
A chance of snow before 7pm, then a chance of snow after 4am. Mostly cloudy, with a low around 22. Southwest wind 6 to 15 mph becoming east after midnight. Winds could gust as high as 33 mph. Chance of precipitation is 30%.
Christmas Day
Snow, mainly after 10am. High near 33. South wind 10 to 14 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Thursday Night
Snow likely. Mostly cloudy, with a low around 24. West wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Friday
Snow. High near 30. West wind 11 to 15 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Friday Night
Snow likely, mainly before 10pm. Mostly cloudy, with a low around 19. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Saturday
A 20 percent chance of snow before 10am. Partly sunny, with a high near 26.
Saturday Night
Mostly cloudy, with a low around 18.
Sunday
Mostly cloudy, with a high near 34.
Sunday Night
Mostly cloudy, with a low around 24.
Monday
Mostly cloudy, with a high near 38.
Monday Night
Mostly cloudy, with a low around 28.
Tuesday
A slight chance of rain and snow. Partly sunny, with a high near 40.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Chinook Pass WA
 46.86°N 121.5°W (Elev. 5295 ft)
Last Update:
10:56 am PST Dec 24, 2025
Forecast Valid:
11am PST Dec 24, 2025-6pm PST Dec 30, 2025
 
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Additional Resources

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Chance of Precipitation