Severe Weather and Heavy Rain from the Great Lakes to the Mid-Atlantic; Heat Persists in the East

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected from the Upper Ohio Valley into the southern Mid-Atlantic today and portions of the central Appalachians and Carolinas on Saturday. Monsoonal moisture will bring a flash flooding threat to the Desert Southwest. Sweltering heat persists from the Plains to the southern Mid-Atlantic through tonight. Read More >

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

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

Partly Cloudy

70°F

21°C

Humidity 52%
Wind Speed WNW 10 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 04 Sep 11:30 AM PDT
Extended Forecast for

Foster City CA

  • Today

    Today: Sunny, with a high near 72. West northwest wind 6 to 14 mph, with gusts as high as 21 mph.

    High: 72 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 56. West wind 8 to 13 mph becoming light  after midnight. Winds could gust as high as 20 mph.

    Low: 56 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 74. Light west wind becoming west northwest 9 to 14 mph in the morning. Winds could gust as high as 21 mph.

    High: 74 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 57. West southwest wind 6 to 14 mph, with gusts as high as 21 mph.

    Low: 57 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 72. West wind 5 to 14 mph, with gusts as high as 21 mph.

    High: 72 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 72. West northwest wind 6 to 14 mph, with gusts as high as 21 mph.
Tonight
Mostly clear, with a low around 56. West wind 8 to 13 mph becoming light after midnight. Winds could gust as high as 20 mph.
Saturday
Mostly sunny, with a high near 74. Light west wind becoming west northwest 9 to 14 mph in the morning. Winds could gust as high as 21 mph.
Saturday Night
Partly cloudy, with a low around 57. West southwest wind 6 to 14 mph, with gusts as high as 21 mph.
Sunday
Mostly sunny, with a high near 72. West wind 5 to 14 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 56.
Labor Day
Sunny, with a high near 81.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Mostly sunny, with a high near 82.
Tuesday Night
A slight chance of rain after 11pm. Partly cloudy, with a low around 60.
Wednesday
A slight chance of rain. Partly sunny, with a high near 80.
Wednesday Night
A slight chance of rain. Mostly cloudy, with a low around 62.
Thursday
A slight chance of rain. Mostly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
Foster City CA
 37.57°N 122.27°W (Elev. 3 ft)
11:27 am PDT Sep 4, 2026
11am PDT Sep 4, 2026-6pm PDT Sep 10, 2026
 
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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