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

Berkeley Lab (LBNL1)

Lat: 37.8771°NLon: 122.2486°WElev: 888.0ft.

NA

51°F

11°C

Humidity 94%
Wind Speed SE 11 MPH
Barometer NA
Dewpoint 49°F (9°C)
Visibility NA
Last update 25 Dec 04:15 AM PST
Extended Forecast for

Berkeley CA

Flood Watch December 25, 04:39am until December 26, 10:00pm
Wind Advisory December 25, 04:39am until December 25, 10:00am
Flood Advisory until December 25, 05:45am
Flash Flood Warning until December 25, 06:00am
Click here for hazard details and duration
Flood Watch
Wind Advisory
Flood Advisory
Flash Flood Warning
  •  
    Flood Watch December 25, 04:39am until December 26, 10:00pm
    Wind Advisory December 25, 04:39am until December 25, 10:00am
    Flood Advisory until December 25, 05:45am
    Flash Flood Warning until December 25, 06:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Overnight

    Low: 53 °F

    Severe
    Thunderstorms
    and Breezy

  • Christmas Day

    Christmas Day: Showers and possibly a thunderstorm before 7am, then rain between 7am and 10am, then showers and possibly a thunderstorm after 10am. Some of the storms could be severe. High near 56. South southwest wind 16 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 56 °F

    Severe
    Thunderstorms

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 10pm, then rain likely after 10pm. Some of the storms could be severe. Low around 50. South southwest wind 16 to 20 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 50 °F

    Severe
    Thunderstorms
    then Rain
    Likely

  • Friday

    Friday: Rain. High near 56. South wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 56 °F

    Rain

  • Friday Night

    Friday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 46. West southwest wind around 7 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 46 °F

    Chance Rain

  • Saturday

    Saturday: A 20 percent chance of rain. Mostly sunny, with a high near 53.

    High: 53 °F

    Slight Chance
    Rain

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Some of the storms could be severe. Low around 53. Breezy, with a south wind around 23 mph, with gusts as high as 38 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Christmas Day
Showers and possibly a thunderstorm before 7am, then rain between 7am and 10am, then showers and possibly a thunderstorm after 10am. Some of the storms could be severe. High near 56. South southwest wind 16 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers and possibly a thunderstorm before 10pm, then rain likely after 10pm. Some of the storms could be severe. Low around 50. South southwest wind 16 to 20 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain. High near 56. South wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 46. West southwest wind around 7 mph. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A 20 percent chance of rain. Mostly sunny, with a high near 53.
Saturday Night
Mostly clear, with a low around 41.
Sunday
Mostly sunny, with a high near 53.
Sunday Night
Mostly clear, with a low around 39.
Monday
Sunny, with a high near 53.
Monday Night
Mostly clear, with a low around 39.
Tuesday
Sunny, with a high near 54.
Tuesday Night
Partly cloudy, with a low around 41.
Wednesday
Mostly cloudy, with a high near 55.
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ABOUT THIS FORECAST

 
Point Forecast:
Berkeley CA
 37.86°N 122.26°W (Elev. 190 ft)
Last Update:
12:27 am PST Dec 25, 2025
Forecast Valid:
4am PST Dec 25, 2025-6pm PST Dec 31, 2025
 
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Additional Resources

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Chance of Precipitation