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

Significant Coastal Impacts to the Mid-Atlantic and Northeast; Tropical Storm Nolo to Impact Hawaii

A strong coastal storm will bring moderate to major coastal flooding, strong winds, heavy rainfall and high surf to the Mid-Atlantic and New England. Tropical Storm Nolo is expected to strengthen into a hurricane today as it moves north toward the Big Island of Hawaii. Heavy rainfall may produce life-threatening, catastrophic flooding and mudslides. Read More >

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

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

Clear

73°F

23°C

Humidity 56%
Wind Speed WNW 17 MPH
Barometer 29.86 in (1011.18 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 24 Sep 02:35 PM PDT
Extended Forecast for

San Mateo CA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 82. West wind 9 to 13 mph, with gusts as high as 20 mph.

    High: 82 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 59. West wind 8 to 10 mph, with gusts as high as 21 mph.

    Low: 59 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 73. West northwest wind 7 to 17 mph, with gusts as high as 28 mph.

    High: 73 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 53. West southwest wind 6 to 15 mph, with gusts as high as 25 mph.

    Low: 53 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 72. Calm wind becoming west 5 to 8 mph in the afternoon.

    High: 72 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 82. West wind 9 to 13 mph, with gusts as high as 20 mph.
Tonight
Partly cloudy, with a low around 59. West wind 8 to 10 mph, with gusts as high as 21 mph.
Friday
Mostly sunny, with a high near 73. West northwest wind 7 to 17 mph, with gusts as high as 28 mph.
Friday Night
Mostly clear, with a low around 53. West southwest wind 6 to 15 mph, with gusts as high as 25 mph.
Saturday
Sunny, with a high near 72. Calm wind becoming west 5 to 8 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 53.
Sunday
Mostly sunny, with a high near 66.
Sunday Night
Mostly clear, with a low around 53.
Monday
Sunny, with a high near 74.
Monday Night
Clear, with a low around 54.
Tuesday
Sunny, with a high near 81.
Tuesday Night
Clear, with a low around 56.
Wednesday
Sunny, with a high near 82.
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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:
1:57 pm PDT Sep 24, 2026
Forecast Valid:
2pm PDT Sep 24, 2026-6pm PDT Sep 30, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation