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

CASHMAN (CHAC1)

Lat: 40.00194°NLon: 120.915°WElev: 4478.0ft.

NA

36°F

2°C

Humidity 91%
Wind Speed S 20 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Wind Chill25°F (-4°C)
Last update 25 Dec 05:47 AM PST
Extended Forecast for

Greenville CA

Winter Storm Warning December 25, 06:39am until December 26, 10:00pm
Click here for hazard details and duration
Winter Storm Warning
  •  
    Winter Storm Warning December 25, 06:39am until December 26, 10:00pm

    NOW until 10:00pm Fri

    Winter Storm Warning

  • Christmas Day

    High: 43 °F

    Rain

  • Tonight

    Tonight: Rain before 1am, then rain, possibly mixed with snow. Low around 28. South wind 13 to 16 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    Low: 28 °F

    Rain then
    Rain/Snow

  • Friday

    Friday: Rain and snow, becoming all rain after 1pm. High near 41. South southwest wind around 11 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 41 °F

    Rain/Snow

  • Friday Night

    Friday Night: Rain before 10pm, then rain and snow likely between 10pm and 1am, then snow likely after 1am. Low around 25. South southwest wind around 6 mph becoming calm after midnight. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 25 °F

    Rain/Snow

  • Saturday

    Saturday: A chance of snow before 1pm, then a slight chance of rain. Mostly sunny, with a high near 43. Calm wind. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    High: 43 °F

    Chance Snow
    then Slight
    Chance
    Rain/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 42.

    High: 42 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 15.

    Low: 15 °F

    Mostly Clear

Detailed Forecast

Christmas Day
Rain. High near 43. South wind 14 to 16 mph, with gusts as high as 41 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Tonight
Rain before 1am, then rain, possibly mixed with snow. Low around 28. South wind 13 to 16 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Friday
Rain and snow, becoming all rain after 1pm. High near 41. South southwest wind around 11 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Friday Night
Rain before 10pm, then rain and snow likely between 10pm and 1am, then snow likely after 1am. Low around 25. South southwest wind around 6 mph becoming calm after midnight. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Saturday
A chance of snow before 1pm, then a slight chance of rain. Mostly sunny, with a high near 43. Calm wind. Chance of precipitation is 30%. 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 42.
Sunday Night
Mostly clear, with a low around 15.
Monday
Sunny, with a high near 44.
Monday Night
Clear, with a low around 16.
Tuesday
Sunny, with a high near 47.
Tuesday Night
Mostly clear, with a low around 19.
Wednesday
Mostly sunny, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Greenville CA
 40.14°N 120.96°W (Elev. 3599 ft)
Last Update:
1:21 am PST Dec 25, 2025
Forecast Valid:
6am PST Dec 25, 2025-6pm PST Dec 31, 2025
 
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