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, San Francisco International Airport (KSFO)

Lat: 37.61961°NLon: 122.36558°WElev: 10.0ft.

Rain

55°F

13°C

Humidity 87%
Wind Speed SW 29 MPH
Barometer 29.64 in (1003.73 mb)
Dewpoint 52°F (11°C)
Visibility 7.00 mi
Last update 25 Dec 05:00 AM PST
Extended Forecast for

San Bruno CA

Flood Watch December 25, 05:24am until December 26, 10:00pm
Wind Advisory December 25, 05:24am until December 25, 10:00am
Flood Advisory December 25, 05:24am until December 25, 06:30am
Click here for hazard details and duration
Flood Watch
Wind Advisory
Flood Advisory
  •  
    Flood Watch December 25, 05:24am until December 26, 10:00pm
    Wind Advisory December 25, 05:24am until December 25, 10:00am
    Flood Advisory December 25, 05:24am until December 25, 06:30am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Overnight

    Low: 54 °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. Breezy, with a south southwest wind 22 to 26 mph, with gusts as high as 44 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 56 °F

    Severe
    Thunderstorms
    and Breezy

  • 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 52. Breezy, with a south southwest wind 15 to 25 mph, with gusts as high as 41 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 52 °F

    Severe
    Thunderstorms
    and Breezy
    then Rain
    Likely

  • Friday

    Friday: Rain. High near 56. South wind around 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: Rain likely, mainly before 10pm. Mostly cloudy, with a low around 48. West northwest wind 7 to 9 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 48 °F

    Rain Likely
    then Chance
    Rain

  • Saturday

    Saturday: A 30 percent chance of rain, mainly before 10am. Mostly sunny, with a high near 53.

    High: 53 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 44.

    Low: 44 °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 54. Breezy, with a south southwest wind around 22 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. Breezy, with a south southwest wind 22 to 26 mph, with gusts as high as 44 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 52. Breezy, with a south southwest wind 15 to 25 mph, with gusts as high as 41 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 around 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
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 48. West northwest wind 7 to 9 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A 30 percent chance of rain, mainly before 10am. Mostly sunny, with a high near 53.
Saturday Night
Mostly clear, with a low around 44.
Sunday
Mostly sunny, with a high near 53.
Sunday Night
Mostly clear, with a low around 43.
Monday
Sunny, with a high near 54.
Monday Night
Mostly clear, with a low around 44.
Tuesday
Sunny, with a high near 55.
Tuesday Night
Partly cloudy, with a low around 45.
Wednesday
Partly sunny, with a high near 56.
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ABOUT THIS FORECAST

 
Point Forecast:
San Bruno CA
 37.64°N 122.4°W (Elev. 49 ft)
Last Update:
12:27 am PST Dec 25, 2025
Forecast Valid:
5am PST Dec 25, 2025-6pm PST Dec 31, 2025
 
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Additional Resources

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