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

Livermore, Livermore Municipal Airport (KLVK)

Lat: 37.69278°NLon: 121.81444°WElev: 397.0ft.

Mostly Cloudy

58°F

14°C

Humidity 69%
Wind Speed SSW 13 MPH
Barometer 29.8 in (1009.14 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 25 Dec 12:53 PM PST
Extended Forecast for

4 Miles N Livermore Municipal CA

Flood Watch December 25, 01:03pm until December 26, 10:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch December 25, 01:03pm until December 26, 10:00pm

    NOW until 10:00pm Fri

    Flood Watch

  • Christmas Day

    High: 54 °F

    Severe
    Thunderstorms
    and Breezy

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 10pm, then showers likely. Some of the storms could be severe. Low around 46. South southwest wind 14 to 18 mph, with gusts as high as 36 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 46 °F

    Severe
    Thunderstorms
    then Chance
    Showers

  • Friday

    Friday: A 50 percent chance of showers, mainly after 5pm. Mostly cloudy, with a high near 53. Southeast wind 10 to 15 mph, with gusts as high as 30 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 53 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 42. Southwest wind around 6 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 42 °F

    Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 50. North wind around 6 mph.

    High: 50 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Areas of frost after 2am. Otherwise, mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear
    then Areas
    Frost

  • Sunday

    Sunday: Areas of frost before 9am. Otherwise, sunny, with a high near 50.

    High: 50 °F

    Areas Frost
    then Sunny

  • Sunday Night

    Sunday Night: Patchy frost after 10pm. Otherwise, mostly clear, with a low around 34.

    Low: 34 °F

    Patchy Frost

Detailed Forecast

Christmas Day
A chance of showers and thunderstorms, then showers likely after 4pm. Some of the storms could be severe. Cloudy, with a high near 54. Breezy, with a south wind around 22 mph, with gusts as high as 37 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and possibly a thunderstorm before 10pm, then showers likely. Some of the storms could be severe. Low around 46. South southwest wind 14 to 18 mph, with gusts as high as 36 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Friday
A 50 percent chance of showers, mainly after 5pm. Mostly cloudy, with a high near 53. Southeast wind 10 to 15 mph, with gusts as high as 30 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 42. Southwest wind around 6 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Partly sunny, with a high near 50. North wind around 6 mph.
Saturday Night
Areas of frost after 2am. Otherwise, mostly clear, with a low around 34.
Sunday
Areas of frost before 9am. Otherwise, sunny, with a high near 50.
Sunday Night
Patchy frost after 10pm. Otherwise, mostly clear, with a low around 34.
Monday
Areas of frost before 9am. Otherwise, sunny, with a high near 52.
Monday Night
Widespread frost, mainly after 5am. Otherwise, mostly clear, with a low around 33.
Tuesday
Widespread frost. Otherwise, mostly sunny, with a high near 53.
Tuesday Night
Areas of frost. Otherwise, mostly clear, with a low around 35.
Wednesday
Areas of frost. Otherwise, mostly sunny, with a high near 53.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Livermore Municipal CA
 37.75°N 121.83°W (Elev. 883 ft)
Last Update:
12:26 pm PST Dec 25, 2025
Forecast Valid:
1pm PST Dec 25, 2025-6pm PST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation