Critical Fire Weather in the Southern High Plains; Heavy Snow in the Great Lakes and Northeast U.S.

Gusty winds and low relative humidity will bring elevated to critical fire weather conditions to the southern High Plains through the weekend. A winter storm will track across the Great Lakes and Northeast U.S. into Saturday with areas of wintry mix and heavy snow from northern New York through southern Maine. Read More >

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

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

Clear

43°F

6°C

Humidity 75%
Wind Speed N 0 MPH
Barometer 30.11 in (1019.64 mb)
Dewpoint 36°F (2°C)
Visibility 8.00 mi
Last update 21 Feb 12:20 AM PST
Extended Forecast for

San Mateo CA

  • Overnight

    Overnight: Partly cloudy, with a low around 40. Southeast wind 3 to 5 mph.

    Low: 40 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 60. South wind 6 to 14 mph, with gusts as high as 24 mph.

    High: 60 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 48. Southeast wind 8 to 10 mph, with gusts as high as 21 mph.

    Low: 48 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 65. South wind 7 to 9 mph.

    High: 65 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 47. Light and variable wind.

    Low: 47 °F

    Mostly Cloudy

  • Monday

    Monday: A 10 percent chance of rain after 4pm.  Partly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Monday Night

    Monday Night: A 50 percent chance of rain, mainly after 10pm.  Mostly cloudy, with a low around 54.

    Low: 54 °F

    Chance Rain

  • Tuesday

    Tuesday: Rain.  Cloudy, with a high near 62.

    High: 62 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain likely.  Cloudy, with a low around 52.

    Low: 52 °F

    Rain Likely

Detailed Forecast

Overnight
Partly cloudy, with a low around 40. Southeast wind 3 to 5 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 60. South wind 6 to 14 mph, with gusts as high as 24 mph.
Saturday Night
Partly cloudy, with a low around 48. Southeast wind 8 to 10 mph, with gusts as high as 21 mph.
Sunday
Partly sunny, with a high near 65. South wind 7 to 9 mph.
Sunday Night
Mostly cloudy, with a low around 47. Light and variable wind.
Monday
A 10 percent chance of rain after 4pm. Partly sunny, with a high near 67.
Monday Night
A 50 percent chance of rain, mainly after 10pm. Mostly cloudy, with a low around 54.
Tuesday
Rain. Cloudy, with a high near 62.
Tuesday Night
Rain likely. Cloudy, with a low around 52.
Wednesday
A chance of rain. Mostly cloudy, with a high near 63.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 50.
Thursday
A slight chance of rain. Partly sunny, with a high near 67.
Thursday Night
A slight chance of rain. Partly cloudy, with a low around 50.
Friday
Mostly sunny, with a high near 68.
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ABOUT THIS FORECAST

 
Point Forecast:
San Mateo CA
 37.54°N 122.32°W (Elev. 194 ft)
12:26 am PST Feb 21, 2026
12am PST Feb 21, 2026-6pm PST Feb 27, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database