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

NCSB (NCSW1)

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

NA

32°F

0°C

Humidity 99%
Wind Speed ENE 1 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Last update 24 Dec 07:06 PM PST
Extended Forecast for

11 Miles WSW Twisp WA

  • Tonight

    Tonight: Partly cloudy, with a low around 21. Southwest wind 3 to 6 mph.

    Low: 21 °F

    Partly Cloudy

  • Christmas Day

    Christmas Day: Snow. High near 28. Calm wind. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    High: 28 °F

    Snow

  • Thursday Night

    Thursday Night: Snow likely, mainly before 10pm. Mostly cloudy, with a low around 23. Light west wind. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 23 °F

    Snow Likely
    then Chance
    Snow

  • Friday

    Friday: Snow, mainly after 10am. High near 28. South wind 5 to 8 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    High: 28 °F

    Snow

  • Friday Night

    Friday Night: Snow likely, mainly before 10pm. Mostly cloudy, with a low around 14. West wind around 11 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: 14 °F

    Snow Likely
    then Slight
    Chance Snow

  • Saturday

    Saturday: Sunny, with a high near 23.

    High: 23 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 12.

    Low: 12 °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 16.

    Low: 16 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 21. Southwest wind 3 to 6 mph.
Christmas Day
Snow. High near 28. Calm wind. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Thursday Night
Snow likely, mainly before 10pm. Mostly cloudy, with a low around 23. Light west wind. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Friday
Snow, mainly after 10am. High near 28. South wind 5 to 8 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Friday Night
Snow likely, mainly before 10pm. Mostly cloudy, with a low around 14. West wind around 11 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Saturday
Sunny, with a high near 23.
Saturday Night
Mostly cloudy, with a low around 12.
Sunday
Partly sunny, with a high near 25.
Sunday Night
Mostly cloudy, with a low around 16.
Monday
Partly sunny, with a high near 28.
Monday Night
Mostly cloudy, with a low around 20.
Tuesday
Partly sunny, with a high near 31.
Tuesday Night
Mostly cloudy, with a low around 23.
Wednesday
A 20 percent chance of snow. Mostly sunny, with a high near 31.
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles WSW Twisp WA
 48.29°N 120.33°W (Elev. 5220 ft)
Last Update:
3:17 pm PST Dec 24, 2025
Forecast Valid:
8pm PST Dec 24, 2025-6pm PST Dec 31, 2025
 
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Additional Resources

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Chance of Precipitation