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

CHESTER (CESC1)

Lat: 40.29261°NLon: 121.24394°WElev: 4547.0ft.

NA

37°F

3°C

Humidity 82%
Wind Speed S 18 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Wind Chill27°F (-3°C)
Last update 25 Dec 11:02 AM PST
Extended Forecast for

Chester CA

Winter Storm Warning December 25, 11:22am until December 26, 10:00pm
Click here for hazard details and duration
Winter Storm Warning
  •  
    Winter Storm Warning December 25, 11:22am until December 26, 10:00pm

    NOW until 10:00pm Fri

    Winter Storm Warning

  • Christmas Day

    High: 38 °F

    Rain/Snow

  • Tonight

    Tonight: Rain and snow, becoming all snow after 1am. Low around 27. Breezy, with a south wind 15 to 22 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.

    Low: 27 °F

    Rain/Snow and
    Breezy

  • Friday

    Friday: Snow before 1pm, then rain and snow. High near 38. South southwest wind 15 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New snow accumulation of around an inch possible.

    High: 38 °F

    Snow then
    Rain/Snow

  • Friday Night

    Friday Night: Rain and snow, becoming all snow after 7pm. Low around 23. South southwest wind 5 to 7 mph becoming calm after midnight. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Low: 23 °F

    Rain/Snow
    then Snow
    Likely

  • Saturday

    Saturday: A 40 percent chance of snow, mainly before 10am. Mostly sunny, with a high near 40. Calm wind becoming north around 5 mph in the afternoon. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 16.

    Low: 16 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 18.

    Low: 18 °F

    Mostly Clear

Detailed Forecast

Christmas Day
Rain and snow. High near 38. South wind around 21 mph, with gusts as high as 38 mph. Chance of precipitation is 100%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Rain and snow, becoming all snow after 1am. Low around 27. Breezy, with a south wind 15 to 22 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.
Friday
Snow before 1pm, then rain and snow. High near 38. South southwest wind 15 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New snow accumulation of around an inch possible.
Friday Night
Rain and snow, becoming all snow after 7pm. Low around 23. South southwest wind 5 to 7 mph becoming calm after midnight. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Saturday
A 40 percent chance of snow, mainly before 10am. Mostly sunny, with a high near 40. Calm wind becoming north around 5 mph in the afternoon. New snow accumulation of less than a half inch possible.
Saturday Night
Partly cloudy, with a low around 16.
Sunday
Mostly sunny, with a high near 39.
Sunday Night
Mostly clear, with a low around 18.
Monday
Sunny, with a high near 42.
Monday Night
Mostly clear, with a low around 20.
Tuesday
Sunny, with a high near 47.
Tuesday Night
Mostly clear, with a low around 23.
Wednesday
Mostly sunny, with a high near 48.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chester CA
 40.28°N 121.23°W (Elev. 4514 ft)
Last Update:
1:21 am PST Dec 25, 2025
Forecast Valid:
11am PST Dec 25, 2025-6pm PST Dec 31, 2025
 
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Additional Resources

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