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.

haze

59°F

15°C

Humidity 62%
Wind Speed S 17 MPH
Barometer 29.9 in (1012.53 mb)
Dewpoint 46°F (8°C)
Visibility 6.00 mi
Last update 26 Dec 01:00 PM PST
Extended Forecast for

Belmont CA

Flood Watch December 26, 01:18pm until December 26, 10:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch December 26, 01:18pm until December 26, 10:00pm

    NOW until 10:00pm Fri

    Flood Watch

  • This Afternoon

    High: 57 °F

    Chance
    Showers

  • Tonight

    Tonight: A 30 percent chance of showers, mainly between 11pm and 1am. Mostly cloudy, with a low around 46. West wind 6 to 9 mph. New precipitation amounts of less than a tenth of an inch possible.

    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: Sunny, with a high near 55. North northeast wind 3 to 7 mph.

    High: 55 °F

    Sunny

  • Sunday Night

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

    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

Detailed Forecast

This Afternoon
A 50 percent chance of showers, mainly before 5pm. Partly sunny, with a high near 57. Southwest wind 14 to 16 mph, with gusts as high as 25 mph. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A 30 percent chance of showers, mainly between 11pm and 1am. Mostly cloudy, with a low around 46. West wind 6 to 9 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
Sunny, with a high near 55. North northeast wind 3 to 7 mph.
Sunday Night
Mostly clear, with a low around 39.
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.
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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:
1pm PST Dec 26, 2025-6pm PST Jan 1, 2026
 
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