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 >

Current conditions at

STEHEKIN-AIRSTRIP (STRW1)

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

NA

32°F

0°C

Humidity 98%
Wind Speed NNE 0 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Last update 25 Dec 10:01 AM PST
Extended Forecast for

4 Miles WSW Mazama WA

  • Christmas Day

    Christmas Day: Snow. High near 30. East wind around 5 mph. Chance of precipitation is 80%. Total daytime snow accumulation of around an inch possible.

    High: 30 °F

    Snow

  • Tonight

    Tonight: Snow likely, mainly before 7pm. Mostly cloudy, with a low around 25. East wind around 5 mph becoming southwest after midnight. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: 25 °F

    Snow Likely
    then Chance
    Snow

  • Friday

    Friday: Snow, mainly after 10am. High near 28. West wind around 7 mph becoming south in the afternoon. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    High: 28 °F

    Snow

  • Friday Night

    Friday Night: Snow, mainly before 10pm. Low around 14. West wind around 9 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    Low: 14 °F

    Snow then
    Chance Snow

  • Saturday

    Saturday: Mostly sunny, with a high near 24. Northwest wind around 7 mph.

    High: 24 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 14.

    Low: 14 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 30.

    High: 30 °F

    Partly Sunny

  • Sunday Night

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

    Low: 20 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 34.

    High: 34 °F

    Mostly Cloudy

Detailed Forecast

Christmas Day
Snow. High near 30. East wind around 5 mph. Chance of precipitation is 80%. Total daytime snow accumulation of around an inch possible.
Tonight
Snow likely, mainly before 7pm. Mostly cloudy, with a low around 25. East wind around 5 mph becoming southwest after midnight. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Friday
Snow, mainly after 10am. High near 28. West wind around 7 mph becoming south in the afternoon. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Friday Night
Snow, mainly before 10pm. Low around 14. West wind around 9 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Saturday
Mostly sunny, with a high near 24. Northwest wind around 7 mph.
Saturday Night
Mostly cloudy, with a low around 14.
Sunday
Partly sunny, with a high near 30.
Sunday Night
Mostly cloudy, with a low around 20.
Monday
Mostly cloudy, with a high near 34.
Monday Night
Mostly cloudy, with a low around 26.
Tuesday
Mostly cloudy, with a high near 36.
Tuesday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 29. Chance of precipitation is 20%.
Wednesday
A chance of rain and snow. Mostly cloudy, with a high near 37. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Mazama WA
 48.61°N 120.51°W (Elev. 3356 ft)
Last Update:
9:21 am PST Dec 25, 2025
Forecast Valid:
10am PST Dec 25, 2025-6pm PST Dec 31, 2025
 
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Additional Resources

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Chance of Precipitation