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

SAN FRANCISCO DOWNTOWN (SFOC1)

Lat: 37.77056°NLon: 122.42694°WElev: 150.0ft.

NA

55°F

13°C

Humidity 78%
Wind Speed NA NA MPH
Barometer NA
Dewpoint 49°F (9°C)
Visibility NA
Last update 25 Dec 12:43 PM PST
Extended Forecast for

San Francisco CA

Flood Watch December 25, 01:14pm until December 26, 10:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch December 25, 01:14pm until December 26, 10:00pm

    NOW until 10:00pm Fri

    Flood Watch

  • Christmas Day

    High: 58 °F

    Severe
    Thunderstorms
    and Breezy

  • Tonight

    Tonight: Showers and possibly a thunderstorm before midnight, then showers likely. Some of the storms could be severe. Low around 51. Breezy, with a south southwest wind 14 to 24 mph, with gusts as high as 39 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 51 °F

    Severe
    Thunderstorms
    and Breezy
    then Showers
    Likely

  • Friday

    Friday: Showers likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 57. South wind 13 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 57 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 47. Southwest wind 7 to 9 mph becoming northwest after midnight. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 47 °F

    Chance
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers. Mostly sunny, with a high near 54. North wind around 7 mph.

    High: 54 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 54.

    High: 54 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

Detailed Forecast

Christmas Day
Showers and possibly a thunderstorm. Some of the storms could be severe. High near 58. Breezy, with a south wind around 23 mph, with gusts as high as 36 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and possibly a thunderstorm before midnight, then showers likely. Some of the storms could be severe. Low around 51. Breezy, with a south southwest wind 14 to 24 mph, with gusts as high as 39 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Showers likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 57. South wind 13 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 47. Southwest wind 7 to 9 mph becoming northwest after midnight. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 54. North wind around 7 mph.
Saturday Night
Mostly clear, with a low around 42.
Sunday
Mostly sunny, with a high near 54.
Sunday Night
Mostly clear, with a low around 42.
Monday
Sunny, with a high near 55.
Monday Night
Mostly clear, with a low around 41.
Tuesday
Sunny, with a high near 56.
Tuesday Night
Mostly clear, with a low around 42.
Wednesday
Mostly sunny, with a high near 56.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
San Francisco CA
 37.77°N 122.41°W (Elev. 131 ft)
Last Update:
12:26 pm PST Dec 25, 2025
Forecast Valid:
1pm PST Dec 25, 2025-6pm PST Dec 31, 2025
 
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Additional Resources

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Chance of Precipitation