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

Above Average Temperatures for Most Today; Winter Weather Returns to the Upper Midwest and Great Lakes

Well above average temperatures are forecast today into Wednesday over most of the lower 48 states away from the Gulf Coast. A storm system passing across southern Canada will bring a wintry mix to the upper Great Lakes today. A trailing cold front will then bring the wintry mix from the central Appalachians through the Northeast U.S. Wednesday and Thursday. Read More >

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

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

Partly Cloudy

55°F

13°C

Humidity 76%
Wind Speed N 0 MPH
Barometer 30.26 in (1024.72 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 13 Jan 02:00 PM PST
Extended Forecast for

San Mateo CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 64. North northeast wind around 6 mph.

    High: 64 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 45. Northwest wind 3 to 5 mph.

    Low: 45 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 63. North wind 5 to 7 mph.

    High: 63 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 45. North wind around 6 mph becoming east in the evening.

    Low: 45 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 66. Northeast wind 5 to 7 mph.

    High: 66 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 64. North northeast wind around 6 mph.
Tonight
Mostly clear, with a low around 45. Northwest wind 3 to 5 mph.
Wednesday
Sunny, with a high near 63. North wind 5 to 7 mph.
Wednesday Night
Mostly clear, with a low around 45. North wind around 6 mph becoming east in the evening.
Thursday
Sunny, with a high near 66. Northeast wind 5 to 7 mph.
Thursday Night
Mostly clear, with a low around 47.
Friday
Sunny, with a high near 66.
Friday Night
Mostly clear, with a low around 47.
Saturday
Sunny, with a high near 65.
Saturday Night
Mostly clear, with a low around 47.
Sunday
Sunny, with a high near 66.
Sunday Night
Mostly clear, with a low around 47.
M.L.King Day
Mostly sunny, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
San Mateo CA
 37.56°N 122.33°W (Elev. 108 ft)
Last Update:
12:26 pm PST Jan 13, 2026
Forecast Valid:
2pm PST Jan 13, 2026-6pm PST Jan 19, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation