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

Tracking Winter Weather and Frigid Temperatures This Weekend

Another clipper will drop into the Northern Plains and Upper Midwest into Sunday with snow and gusty winds contributing to some areas of blizzard conditions and snow squalls. Impactful snowfall will occur up and down the East Coast Sunday extending from the western Florida Panhandle to Maine. Read More >

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

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

Clear

57°F

14°C

Humidity 67%
Wind Speed SSW 3 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 17 Jan 06:30 PM PST
Extended Forecast for

San Mateo CA

  • Tonight

    Tonight: Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 45. North wind 3 to 5 mph.

    Low: 45 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 64. North wind 3 to 6 mph.

    High: 64 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 47. Light northeast wind.

    Low: 47 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 64. North wind 3 to 6 mph.

    High: 64 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 45. Northeast wind 3 to 5 mph.

    Low: 45 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 4am. Otherwise, partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy
    then Patchy
    Fog

Detailed Forecast

Tonight
Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 45. North wind 3 to 5 mph.
Sunday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 64. North wind 3 to 6 mph.
Sunday Night
Partly cloudy, with a low around 47. Light northeast wind.
M.L.King Day
Sunny, with a high near 64. North wind 3 to 6 mph.
Monday Night
Mostly clear, with a low around 45. Northeast wind 3 to 5 mph.
Tuesday
Mostly sunny, with a high near 64.
Tuesday Night
Partly cloudy, with a low around 47.
Wednesday
Mostly sunny, with a high near 63.
Wednesday Night
Patchy fog after 4am. Otherwise, partly cloudy, with a low around 48.
Thursday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 62.
Thursday Night
Patchy fog. Otherwise, partly cloudy, with a low around 48.
Friday
Patchy fog. Otherwise, mostly sunny, with a high near 59.
Friday Night
Partly cloudy, with a low around 49.
Saturday
Mostly sunny, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
San Mateo CA
 37.58°N 122.33°W (Elev. 33 ft)
Last Update:
12:26 pm PST Jan 17, 2026
Forecast Valid:
6pm PST Jan 17, 2026-6pm PST Jan 24, 2026
 
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Additional Resources

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Chance of Precipitation