National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

Hazardous Weather Conditions

Current conditions at

CHESTER (CESC1)

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

NA

44°F

7°C

Humidity 97%
Wind Speed SE 5 MPH
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Wind Chill41°F (5°C)
Last update 24 Dec 12:02 AM PST
Extended Forecast for

Chester CA

Flood Watch December 24, 12:36am 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, 12:36am until December 26, 04:00pm
    Winter Storm Warning until December 26, 10:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Overnight

    Low: 32 °F

    Rain

  • Wednesday

    Wednesday: Rain, mainly before 11am. High near 45. South wind 9 to 14 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 45 °F

    Rain then
    Chance Rain

  • Wednesday Night

    Wednesday Night: Rain before 4am, then rain and snow. Low around 28. South wind 9 to 11 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

    Low: 28 °F

    Rain then
    Rain/Snow

  • Christmas Day

    Christmas Day: Rain and snow before 7am, then rain between 7am and 1pm, then rain and snow after 1pm. High near 40. South wind 13 to 15 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Rain/Snow

  • Thursday Night

    Thursday Night: Rain and snow, becoming all snow after 1am. Low around 24. South wind 10 to 13 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    Low: 24 °F

    Rain/Snow

  • Friday

    Friday: Snow. High near 37. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.

    High: 37 °F

    Snow

  • Friday Night

    Friday Night: Snow, mainly before 4am. Low around 19. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Low: 19 °F

    Snow

  • Saturday

    Saturday: A slight chance of snow before 10am. Mostly sunny, with a high near 41.

    High: 41 °F

    Slight Chance
    Snow then
    Sunny

Detailed Forecast

Overnight
Rain. Low around 32. South southeast wind 13 to 15 mph, with gusts as high as 37 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday
Rain, mainly before 11am. High near 45. South wind 9 to 14 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Rain before 4am, then rain and snow. Low around 28. South wind 9 to 11 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Christmas Day
Rain and snow before 7am, then rain between 7am and 1pm, then rain and snow after 1pm. High near 40. South wind 13 to 15 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Thursday Night
Rain and snow, becoming all snow after 1am. Low around 24. South wind 10 to 13 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Friday
Snow. High near 37. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.
Friday Night
Snow, mainly before 4am. Low around 19. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Saturday
A slight chance of snow before 10am. Mostly sunny, with a high near 41.
Saturday Night
Partly cloudy, with a low around 13.
Sunday
Sunny, with a high near 42.
Sunday Night
Mostly clear, with a low around 13.
Monday
Sunny, with a high near 45.
Monday Night
Mostly clear, with a low around 16.
Tuesday
Sunny, with a high near 48.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chester CA
 40.3°N 121.23°W (Elev. 4547 ft)
Last Update:
1:36 pm PST Dec 23, 2025
Forecast Valid:
12am PST Dec 24, 2025-6pm PST Dec 30, 2025
 
Forecast Discussion
 
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Additional Resources

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