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

619Line-Sierra Valley West (LIB10)

Lat: 39.75937°NLon: 120.37408°WElev: 4884.0ft.

NA

37°F

3°C

Humidity 84%
Wind Speed S 15 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Wind Chill28°F (-2°C)
Last update 25 Dec 04:20 AM PST
Extended Forecast for

5 Miles NNE Beckwourth CA

Winter Storm Warning December 25, 04:39am until December 26, 10:00am
Click here for hazard details and duration
Winter Storm Warning
  •  
    Winter Storm Warning December 25, 04:39am until December 26, 10:00am

    NOW until 10:00am Fri

    Winter Storm Warning

  • Overnight

    Low: 29 °F

    Heavy Snow
    and Patchy
    Fog

  • Christmas Day

    Christmas Day: Snow. The snow could be heavy at times. Patchy fog before 7am, then patchy fog after 2pm. Patchy freezing fog before 2pm, then patchy freezing fog after 5pm. High near 34. Breezy, with a south wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of 4 to 8 inches possible.

    High: 34 °F

    Heavy Snow
    and Patchy
    Freezing Fog

  • Thursday Night

    Thursday Night: Snow. The snow could be heavy at times. Patchy dense freezing fog. Low around 23. Breezy, with a southwest wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.

    Low: 23 °F

    Heavy Snow
    and Patchy
    Dense
    Freezing Fog

  • Friday

    Friday: Snow. Patchy fog between 9am and 10am. Patchy freezing fog between 8am and 9am. High near 32. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    High: 32 °F

    Snow and
    Patchy
    Freezing Fog

  • Friday Night

    Friday Night: A 50 percent chance of snow, mainly before 4am. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 20. Southwest wind around 10 mph, with gusts as high as 20 mph. New snow accumulation of less than a half inch possible.

    Low: 20 °F

    Chance Snow
    and Patchy
    Fog

  • Saturday

    Saturday: A 20 percent chance of snow before 10am. Mostly cloudy, then gradually becoming sunny, with a high near 32. Northwest wind around 5 mph.

    High: 32 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 11.

    Low: 11 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 31.

    High: 31 °F

    Decreasing
    Clouds

Detailed Forecast

Overnight
Snow. The snow could be heavy at times. Patchy fog. Low around 29. Windy, with a south wind around 30 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 1 to 3 inches possible.
Christmas Day
Snow. The snow could be heavy at times. Patchy fog before 7am, then patchy fog after 2pm. Patchy freezing fog before 2pm, then patchy freezing fog after 5pm. High near 34. Breezy, with a south wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of 4 to 8 inches possible.
Thursday Night
Snow. The snow could be heavy at times. Patchy dense freezing fog. Low around 23. Breezy, with a southwest wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.
Friday
Snow. Patchy fog between 9am and 10am. Patchy freezing fog between 8am and 9am. High near 32. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Friday Night
A 50 percent chance of snow, mainly before 4am. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 20. Southwest wind around 10 mph, with gusts as high as 20 mph. New snow accumulation of less than a half inch possible.
Saturday
A 20 percent chance of snow before 10am. Mostly cloudy, then gradually becoming sunny, with a high near 32. Northwest wind around 5 mph.
Saturday Night
Increasing clouds, with a low around 11.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 31.
Sunday Night
Mostly clear, with a low around 13.
Monday
Sunny, with a high near 34.
Monday Night
Mostly clear, with a low around 17.
Tuesday
Sunny, with a high near 39.
Tuesday Night
Mostly clear, with a low around 22.
Wednesday
Partly sunny, with a high near 42.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NNE Beckwourth CA
 39.87°N 120.33°W (Elev. 6736 ft)
Last Update:
1:16 am PST Dec 25, 2025
Forecast Valid:
4am PST Dec 25, 2025-6pm PST Dec 31, 2025
 
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