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

Tracking Winter Weather and Frigid Temperatures Through This Weekend

A clipper storm will move across the Great Lakes through this weekend with periods of light snow, gusty winds, and lake effect snow bands which could make for hazardous travel at times. A frigid airmass will spread eastward behind this storm into the Midwest and Eastern U.S. through the weekend. Read More >

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

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

Mostly Cloudy

55°F

13°C

Humidity 74%
Wind Speed E 3 MPH
Barometer 30.18 in (1022.01 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 17 Jan 09:56 AM PST
Extended Forecast for

Foster City CA

  • Today

    Today: Mostly sunny, with a high near 66. East wind around 6 mph becoming north in the afternoon.

    High: 66 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 47. Light north wind.

    Low: 47 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 66. East northeast wind 3 to 6 mph.

    High: 66 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 45. Light east northeast wind.

    Low: 45 °F

    Mostly Clear

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 65. North northeast wind 3 to 7 mph.

    High: 65 °F

    Sunny

  • Monday Night

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

    Low: 44 °F

    Mostly Clear

  • Tuesday

    Tuesday: Patchy fog before 8am. Otherwise, sunny, with a high near 65.

    High: 65 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 66. East wind around 6 mph becoming north in the afternoon.
Tonight
Mostly cloudy, with a low around 47. Light north wind.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 66. East northeast wind 3 to 6 mph.
Sunday Night
Mostly clear, with a low around 45. Light east northeast wind.
M.L.King Day
Sunny, with a high near 65. North northeast wind 3 to 7 mph.
Monday Night
Mostly clear, with a low around 44.
Tuesday
Patchy fog before 8am. Otherwise, sunny, with a high near 65.
Tuesday Night
Mostly clear, with a low around 46.
Wednesday
Mostly sunny, with a high near 64.
Wednesday Night
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 47.
Thursday
Areas of fog. Otherwise, partly sunny, with a high near 62.
Thursday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 48.
Friday
Patchy fog. Otherwise, mostly sunny, with a high near 61.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Foster City CA
 37.57°N 122.27°W (Elev. 3 ft)
Last Update:
1:13 am PST Jan 17, 2026
Forecast Valid:
10am PST Jan 17, 2026-6pm PST Jan 23, 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