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

NCSB (NCSW1)

Lat: 48.42528°NLon: 120.14194°WElev: 1697.0ft.

NA

31°F

-1°C

Humidity 100%
Wind Speed NNW 0 MPH
Barometer NA
Dewpoint 31°F (-1°C)
Visibility NA
Last update 25 Dec 10:06 PM PST
Extended Forecast for

10 Miles NNE Winthrop WA

  • Tonight

    Tonight: Mostly cloudy, with a low around 22. Calm wind.

    Low: 22 °F

    Mostly Cloudy

  • Friday

    Friday: Snow likely, mainly after 10am.  Mostly cloudy, with a high near 30. Calm wind becoming southwest around 6 mph in the afternoon.  Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    High: 30 °F

    Snow Likely

  • Friday Night

    Friday Night: Snow likely, mainly before 10pm.  Mostly cloudy, with a low around 9. North wind around 6 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 9 °F

    Snow Likely
    then Slight
    Chance Snow

  • Saturday

    Saturday: Sunny, with a high near 20. Northwest wind 3 to 6 mph.

    High: 20 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 9. Calm wind.

    Low: 9 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 25.

    High: 25 °F

    Partly Sunny

  • Sunday Night

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

    Low: 14 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 25.

    High: 25 °F

    Mostly Cloudy

  • Monday Night

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

    Low: 20 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 22. Calm wind.
Friday
Snow likely, mainly after 10am. Mostly cloudy, with a high near 30. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Friday Night
Snow likely, mainly before 10pm. Mostly cloudy, with a low around 9. North wind around 6 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday
Sunny, with a high near 20. Northwest wind 3 to 6 mph.
Saturday Night
Mostly cloudy, with a low around 9. Calm wind.
Sunday
Partly sunny, with a high near 25.
Sunday Night
Mostly cloudy, with a low around 14.
Monday
Mostly cloudy, with a high near 25.
Monday Night
Mostly cloudy, with a low around 20.
Tuesday
Mostly cloudy, with a high near 30.
Tuesday Night
Mostly cloudy, with a low around 25.
Wednesday
A chance of rain and snow. Mostly cloudy, with a high near 29. Chance of precipitation is 30%.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around 24. Chance of precipitation is 30%.
New Year's Day
A 40 percent chance of snow. Mostly cloudy, with a high near 29.
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ABOUT THIS FORECAST

 
Point Forecast:
10 Miles NNE Winthrop WA
 48.6°N 120.09°W (Elev. 3232 ft)
9:12 pm PST Dec 25, 2025
10pm PST Dec 25, 2025-6pm PST Jan 1, 2026
 
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Additional Resources

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