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

Heavy Snow in the Northwest; Wintry Mix from the Great Lakes to Northeast

Two cold fronts will pass through the Northwest U.S. this week with the main impact being heavy mountain snow across the Cascades, and northern Rockies. A quick moving storm system will bring mixed precipitation including some freezing rain to the Upper Midwest and Great Lakes today then the Northeast U.S. tonight into Wednesday. Read More >

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

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

Mostly Cloudy

57°F

14°C

Humidity 76%
Wind Speed N 5 MPH
Barometer 30.06 in (1017.95 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 06 Jan 03:20 PM PST
Extended Forecast for

Foster City CA

  • Tonight

    Tonight: Mostly cloudy, with a low around 49. Calm wind.

    Low: 49 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 58. West northwest wind 5 to 11 mph, with gusts as high as 18 mph.

    High: 58 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 45. West northwest wind 10 to 13 mph, with gusts as high as 21 mph.

    Low: 45 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 55. North northwest wind 8 to 10 mph.

    High: 55 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 40. North northeast wind 5 to 7 mph.

    Low: 40 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Saturday Night

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

    Low: 42 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 49. Calm wind.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 58. West northwest wind 5 to 11 mph, with gusts as high as 18 mph.
Wednesday Night
Mostly clear, with a low around 45. West northwest wind 10 to 13 mph, with gusts as high as 21 mph.
Thursday
Sunny, with a high near 55. North northwest wind 8 to 10 mph.
Thursday Night
Mostly clear, with a low around 40. North northeast wind 5 to 7 mph.
Friday
Sunny, with a high near 56.
Friday Night
Partly cloudy, with a low around 40.
Saturday
Mostly sunny, with a high near 58.
Saturday Night
Mostly cloudy, with a low around 42.
Sunday
Partly sunny, with a high near 59.
Sunday Night
Partly cloudy, with a low around 43.
Monday
Sunny, with a high near 61.
Monday Night
Mostly clear, with a low around 44.
Tuesday
Sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Foster City CA
 37.54°N 122.29°W (Elev. 151 ft)
Last Update:
12:26 pm PST Jan 6, 2026
Forecast Valid:
3pm PST Jan 6, 2026-6pm PST Jan 13, 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