National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heavy Rain and Mountain Snow Lingers in California; Winter Storm Impacting the Great Lakes and Northeast U.S.

An atmospheric river will wind down through today across California with lingering heavy rainfall, heavy mountain snow, and gusty winds. A wintry mix of freezing rain, sleet, and snow will cause hazardous travel conditions for the Great Lakes into the northern Mid-Atlantic and southern New England today through Saturday morning. Areas of tree damage and power outages are possible. Read More >

Hazardous Weather Conditions

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

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

Partly Cloudy

54°F

12°C

Humidity 76%
Wind Speed W 9 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 26 Dec 06:20 PM PST
Extended Forecast for

Belmont CA

Flood Watch December 26, 06:45pm until December 26, 10:00pm
Click here for hazard details and duration
...
  •  
    Flood Watch December 26, 06:45pm until December 26, 10:00pm

    NOW until 10:00pm Fri

    Flood Watch

  • Tonight

    Low: 46 °F

    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 55. North wind around 8 mph.

    High: 55 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 40. North northeast wind 3 to 6 mph.

    Low: 40 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny, with a high near 55. North northeast wind 3 to 7 mph.

    High: 55 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39. East northeast wind around 6 mph.

    Low: 39 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

Detailed Forecast

Tonight
A 30 percent chance of showers, mainly between 11pm and 1am. Mostly cloudy, with a low around 46. West wind 6 to 10 mph. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Mostly sunny, with a high near 55. North wind around 8 mph.
Saturday Night
Partly cloudy, with a low around 40. North northeast wind 3 to 6 mph.
Sunday
Partly sunny, then gradually becoming sunny, with a high near 55. North northeast wind 3 to 7 mph.
Sunday Night
Mostly clear, with a low around 39. East northeast wind around 6 mph.
Monday
Sunny, with a high near 57.
Monday Night
Mostly clear, with a low around 39.
Tuesday
Sunny, with a high near 58.
Tuesday Night
Mostly clear, with a low around 41.
Wednesday
Mostly sunny, with a high near 58.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 45.
New Year's Day
A chance of showers. Mostly cloudy, with a high near 58.
Thursday Night
Showers likely. Mostly cloudy, with a low around 47.
Friday
Showers likely. Mostly cloudy, with a high near 57.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Belmont CA
 37.52°N 122.29°W (Elev. 207 ft)
Last Update:
12:27 pm PST Dec 26, 2025
Forecast Valid:
6pm PST Dec 26, 2025-6pm PST Jan 2, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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