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

MANZANITA LAKE (VIOC1)

Lat: 40.54011°NLon: 121.58016°WElev: 5732.0ft.

NA

38°F

3°C

Humidity 82%
Wind Speed S 4 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Wind Chill35°F (2°C)
Last update 24 Dec 08:52 AM PST
Extended Forecast for

21 Miles NW Chester CA

Flood Watch December 24, 09:58am until December 26, 04:00pm
Winter Storm Warning until December 26, 10:00pm
Click here for hazard details and duration
Flood Watch
Winter Storm Warning
  •  
    Flood Watch December 24, 09:58am until December 26, 04:00pm
    Winter Storm Warning until December 26, 10:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Today

    High: 35 °F

    Rain/Snow
    Likely and
    Breezy then
    Slight Chance
    Snow

  • Tonight

    Tonight: Snow, mainly after 8pm. The snow could be heavy at times.  Steady temperature around 31. Breezy, with a south wind 17 to 26 mph, with gusts as high as 65 mph.  Chance of precipitation is 100%. New snow accumulation of 11 to 17 inches possible.

    Low: 31 °F

    Heavy Snow
    and Breezy

  • Christmas Day

    Christmas Day: Snow. The snow could be heavy at times.  Temperature falling to around 26 by 7am. Breezy, with a south southwest wind 21 to 29 mph, with gusts as high as 70 mph.  Chance of precipitation is 100%. New snow accumulation of 11 to 17 inches possible.

    High: 31 °F

    Heavy Snow
    and Breezy

  • Thursday Night

    Thursday Night: Snow. The snow could be heavy at times.  Low around 25. Breezy, with a south wind around 26 mph, with gusts as high as 60 mph.  Chance of precipitation is 100%. New snow accumulation of 10 to 14 inches possible.

    Low: 25 °F

    Heavy Snow
    and Breezy

  • Friday

    Friday: Snow. The snow could be heavy at times.  High near 28. Breezy, with a south southwest wind 15 to 22 mph, with gusts as high as 55 mph.  Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

    High: 28 °F

    Heavy Snow
    and Breezy

  • Friday Night

    Friday Night: Snow, mainly before 4am.  Low around 22. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Low: 22 °F

    Snow then
    Snow Likely

  • Saturday

    Saturday: A 30 percent chance of snow before 10am.  Mostly sunny, with a high near 29. New snow accumulation of less than a half inch possible.

    High: 29 °F

    Chance Snow
    then Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 19.

    Low: 19 °F

    Mostly Clear

Detailed Forecast

Today
Rain and snow likely before noon, then a slight chance of snow between noon and 1pm. Partly sunny, with a high near 35. Breezy, with a south wind 21 to 26 mph decreasing to 13 to 18 mph in the afternoon. Winds could gust as high as 65 mph. Chance of precipitation is 70%. Total daytime snow accumulation of 1 to 3 inches possible.
Tonight
Snow, mainly after 8pm. The snow could be heavy at times. Steady temperature around 31. Breezy, with a south wind 17 to 26 mph, with gusts as high as 65 mph. Chance of precipitation is 100%. New snow accumulation of 11 to 17 inches possible.
Christmas Day
Snow. The snow could be heavy at times. Temperature falling to around 26 by 7am. Breezy, with a south southwest wind 21 to 29 mph, with gusts as high as 70 mph. Chance of precipitation is 100%. New snow accumulation of 11 to 17 inches possible.
Thursday Night
Snow. The snow could be heavy at times. Low around 25. Breezy, with a south wind around 26 mph, with gusts as high as 60 mph. Chance of precipitation is 100%. New snow accumulation of 10 to 14 inches possible.
Friday
Snow. The snow could be heavy at times. High near 28. Breezy, with a south southwest wind 15 to 22 mph, with gusts as high as 55 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.
Friday Night
Snow, mainly before 4am. Low around 22. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Saturday
A 30 percent chance of snow before 10am. Mostly sunny, with a high near 29. New snow accumulation of less than a half inch possible.
Saturday Night
Mostly clear, with a low around 19.
Sunday
Mostly sunny, with a high near 35.
Sunday Night
Mostly clear, with a low around 24.
Monday
Sunny, with a high near 38.
Monday Night
Mostly clear, with a low around 28.
Tuesday
Sunny, with a high near 42.
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ABOUT THIS FORECAST

 
Point Forecast:
21 Miles NW Chester CA
 40.53°N 121.5°W (Elev. 6545 ft)
9:31 am PST Dec 24, 2025
9am PST Dec 24, 2025-6pm PST Dec 30, 2025
 
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Additional Resources

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