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 >

Current conditions at

STEHEKIN-AIRSTRIP (STRW1)

Lat: 48.34694°NLon: 120.72028°WElev: 1230.0ft.

NA

32°F

0°C

Humidity 99%
Wind Speed NW 0 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Last update 24 Dec 11:01 AM PST
Extended Forecast for

27 Miles NNW Mazama WA

Winter Weather Advisory December 24, 11:52am until December 24, 04:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory December 24, 11:52am until December 24, 04:00pm

    NOW until 4:00pm Wed

    Winter Weather Advisory

  • Today

    High: 33 °F

    Snow and
    Breezy

  • Tonight

    Tonight: Snow likely, mainly before 7pm.  Mostly cloudy, then gradually becoming mostly clear, with a low around 17. Southwest wind 8 to 11 mph, with gusts as high as 25 mph.  Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    Low: 17 °F

    Snow Likely
    then Partly
    Cloudy

  • Christmas Day

    Christmas Day: Snow, mainly after 10am.  High near 29. Southeast wind around 8 mph becoming northeast in the afternoon.  Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    High: 29 °F

    Snow

  • Thursday Night

    Thursday Night: Snow.  Low around 24. West wind 7 to 9 mph, with gusts as high as 18 mph.  Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Low: 24 °F

    Snow

  • Friday

    Friday: Snow.  High near 27. Southwest wind 11 to 14 mph, with gusts as high as 26 mph.  Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    High: 27 °F

    Snow

  • Friday Night

    Friday Night: Snow likely, mainly before 10pm.  Mostly cloudy, with a low around 11. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: 11 °F

    Snow Likely
    then Chance
    Snow

  • Saturday

    Saturday: Partly sunny, with a high near 19.

    High: 19 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of snow.  Mostly cloudy, with a low around 13.

    Low: 13 °F

    Slight Chance
    Snow

Detailed Forecast

Today
Snow. High near 33. Breezy, with a north wind 13 to 18 mph becoming west in the afternoon. Winds could gust as high as 44 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 1 to 3 inches possible.
Tonight
Snow likely, mainly before 7pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 17. Southwest wind 8 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Christmas Day
Snow, mainly after 10am. High near 29. Southeast wind around 8 mph becoming northeast in the afternoon. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Thursday Night
Snow. Low around 24. West wind 7 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Friday
Snow. High near 27. Southwest wind 11 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Friday Night
Snow likely, mainly before 10pm. Mostly cloudy, with a low around 11. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Saturday
Partly sunny, with a high near 19.
Saturday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 13.
Sunday
A 20 percent chance of snow. Mostly cloudy, with a high near 27.
Sunday Night
A 20 percent chance of snow before 10pm. Mostly cloudy, with a low around 20.
Monday
A 20 percent chance of snow. Mostly cloudy, with a high near 33.
Monday Night
Mostly cloudy, with a low around 24.
Tuesday
Mostly cloudy, with a high near 35.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
27 Miles NNW Mazama WA
 48.93°N 120.77°W (Elev. 5748 ft)
10:02 am PST Dec 24, 2025
11am PST Dec 24, 2025-6pm PST Dec 30, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database