Dangerous Surf and Rip Currents for most of the Atlantic Shoreline; Record Heat for the West

Hurricane Erin continues to track northward. Tropical storm force winds, storm surge conditions will increase for the Outer Banks today and portions of coastal Virginia. Life-threatening surf and rip currents along much of the east coast of the U.S. this week. Major to extreme HeatRisk with new record high temperatures are expected for many areas of the western U.S. this week. Read More >

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

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

Clear

66°F

19°C

Humidity 72%
Wind Speed ENE 4 MPH
Barometer 30.07 in (1018.29 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 20 Aug 11:00 AM PDT
Extended Forecast for

San Mateo CA

  • Today

    Today: Sunny, with a high near 83. North wind 5 to 11 mph becoming west in the afternoon.

    High: 83 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 58. West wind 10 to 15 mph becoming light west southwest  after midnight. Winds could gust as high as 18 mph.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 83. Calm wind becoming west 5 to 9 mph in the afternoon.

    High: 83 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 58. West wind 5 to 11 mph.

    Low: 58 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 79. Light west wind increasing to 5 to 9 mph in the afternoon.

    High: 79 °F

    Mostly Sunny

  • Friday Night

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

    Low: 58 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 83. North wind 5 to 11 mph becoming west in the afternoon.
Tonight
Mostly clear, with a low around 58. West wind 10 to 15 mph becoming light west southwest after midnight. Winds could gust as high as 18 mph.
Thursday
Mostly sunny, with a high near 83. Calm wind becoming west 5 to 9 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 58. West wind 5 to 11 mph.
Friday
Mostly sunny, with a high near 79. Light west wind increasing to 5 to 9 mph in the afternoon.
Friday Night
Mostly clear, with a low around 58.
Saturday
Mostly sunny, with a high near 79.
Saturday Night
Partly cloudy, with a low around 58.
Sunday
Mostly sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 58.
Monday
Mostly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Mostly sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
San Mateo CA
 37.56°N 122.33°W (Elev. 108 ft)
8:56 am PDT Aug 20, 2025
11am PDT Aug 20, 2025-6pm PDT Aug 26, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database