Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

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

Mostly Cloudy

68°F

20°C

Humidity 67%
Wind Speed NW 14 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 27 Aug 09:56 AM PDT
Extended Forecast for

Foster City CA

  • Today

    Today: A 20 percent chance of showers.  Partly sunny, with a high near 78. Light and variable wind becoming west northwest 5 to 10 mph in the afternoon.

    High: 78 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers.  Mostly cloudy, with a low around 60. West wind 5 to 9 mph becoming calm  after midnight.

    Low: 60 °F

    Slight Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers.  Mostly cloudy, with a high near 74. Light northwest wind becoming west northwest 6 to 11 mph in the afternoon.

    High: 74 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: Mostly cloudy during the early evening, then becoming mostly clear, with a low around 57. West wind 6 to 13 mph.

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 72. West wind 5 to 14 mph, with gusts as high as 20 mph.

    High: 72 °F

    Mostly Sunny

  • Saturday Night

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

    Low: 56 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

Detailed Forecast

Today
A 20 percent chance of showers. Partly sunny, with a high near 78. Light and variable wind becoming west northwest 5 to 10 mph in the afternoon.
Tonight
A 20 percent chance of showers. Mostly cloudy, with a low around 60. West wind 5 to 9 mph becoming calm after midnight.
Friday
A 20 percent chance of showers. Mostly cloudy, with a high near 74. Light northwest wind becoming west northwest 6 to 11 mph in the afternoon.
Friday Night
Mostly cloudy during the early evening, then becoming mostly clear, with a low around 57. West wind 6 to 13 mph.
Saturday
Mostly sunny, with a high near 72. West wind 5 to 14 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Mostly sunny, with a high near 71.
Sunday Night
Mostly clear, with a low around 55.
Monday
Mostly sunny, with a high near 70.
Monday Night
Partly cloudy, with a low around 56.
Tuesday
Mostly sunny, with a high near 72.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
Mostly sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
Foster City CA
 37.55°N 122.27°W (Elev. 33 ft)
6:47 am PDT Aug 27, 2026
10am PDT Aug 27, 2026-6pm PDT Sep 2, 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