Areas of Dangerous Heat and Severe Thunderstorms

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 before returning over much of the Plains into next week. Scattered strong to severe thunderstorms are possible across parts of the Northeast U.S. on Thursday. Damaging wind, hail, and a tornado or two are possible. Read More >

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

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

Partly Cloudy

63°F

17°C

Humidity 82%
Wind Speed W 23 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 26 Aug 10:00 PM PDT
Extended Forecast for

San Mateo CA

  • Tonight

    Tonight: Mostly clear, with a low around 60. West southwest wind 5 to 8 mph becoming calm  after midnight. Winds could gust as high as 21 mph.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 79. Calm wind becoming west 5 to 9 mph in the afternoon.

    High: 79 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 59. West wind 5 to 9 mph becoming light west southwest  after midnight. Winds could gust as high as 18 mph.

    Low: 59 °F

    Increasing
    Clouds

  • Friday

    Friday: A 20 percent chance of showers.  Mostly cloudy, with a high near 74. Calm wind becoming west 5 to 9 mph in the afternoon.

    High: 74 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 56. West wind 6 to 11 mph.

    Low: 56 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 72.

    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 72.

    High: 72 °F

    Mostly Sunny

  • Sunday Night

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

    Low: 55 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 60. West southwest wind 5 to 8 mph becoming calm after midnight. Winds could gust as high as 21 mph.
Thursday
Mostly sunny, with a high near 79. Calm wind becoming west 5 to 9 mph in the afternoon.
Thursday Night
Increasing clouds, with a low around 59. West wind 5 to 9 mph becoming light west southwest after midnight. Winds could gust as high as 18 mph.
Friday
A 20 percent chance of showers. Mostly cloudy, with a high near 74. Calm wind becoming west 5 to 9 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 56. West wind 6 to 11 mph.
Saturday
Mostly sunny, with a high near 72.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Mostly sunny, with a high near 72.
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 55.
Tuesday
Mostly sunny, with a high near 72.
Tuesday Night
Partly cloudy, with a low around 56.
Wednesday
Mostly sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
San Mateo CA
 37.56°N 122.33°W (Elev. 108 ft)
8:29 pm PDT Aug 26, 2026
10pm PDT Aug 26, 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