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

Risks of Severe Thunderstorms and Excessive Rainfall; Fire Weather Concerns and Record Warmth

Severe thunderstorms and flash flooding risks increase across the center of the nation today. Meanwhile, ongoing thunderstorms and flash flooding will linger along the Gulf Coast states through the evening. The Great Basin and Intermountain West, warm temperatures and dry fuels with dry lightning may enhance fire weather potential. In addition, across interior Alaska, Red Flag Warning are posted. 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 W 18 MPH
Barometer 30.0 in (1015.92 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 20 Jun 12:35 PM PDT
Extended Forecast for

San Mateo CA

  • This Afternoon

    This Afternoon: Partly sunny, then gradually becoming sunny, with a high near 71. West southwest wind 7 to 11 mph.

    High: 71 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 54. West wind 5 to 9 mph becoming calm after midnight.

    Low: 54 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy through mid morning, then gradual clearing, with a high near 73. Light west southwest wind increasing to 5 to 10 mph in the afternoon.

    High: 73 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 54. West southwest wind 3 to 8 mph.

    Low: 54 °F

    Increasing
    Clouds

  • Monday

    Monday: Mostly sunny, with a high near 76. Calm wind becoming west 5 to 9 mph in the afternoon.

    High: 76 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Tuesday Night

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

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, then gradually becoming sunny, with a high near 71. West southwest wind 7 to 11 mph.
Tonight
Increasing clouds, with a low around 54. West wind 5 to 9 mph becoming calm after midnight.
Sunday
Mostly cloudy through mid morning, then gradual clearing, with a high near 73. Light west southwest wind increasing to 5 to 10 mph in the afternoon.
Sunday Night
Increasing clouds, with a low around 54. West southwest wind 3 to 8 mph.
Monday
Mostly sunny, with a high near 76. Calm wind becoming west 5 to 9 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 56.
Tuesday
Mostly sunny, with a high near 77.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
Mostly sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 56.
Thursday
Mostly sunny, with a high near 76.
Thursday Night
Mostly clear, with a low around 56.
Friday
Mostly sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
San Mateo CA
 37.54°N 122.32°W (Elev. 194 ft)
Last Update:
11:27 am PDT Jun 20, 2026
Forecast Valid:
12pm PDT Jun 20, 2026-6pm PDT Jun 26, 2026
 
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Additional Resources

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