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

Critical Fire Weather in the High Plains; Heat Continues in the West

Critical fire weather conditions will persist in the central High Plains through Friday as gusty winds and dry conditions continue. The heat wave across the West and Southwest will continue to intensify through the week, with daily and monthly record highs expected to be broken. Read More >

Hazardous Weather Conditions

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

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

Partly Cloudy

52°F

11°C

Humidity 87%
Wind Speed WNW 9 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 19 Mar 03:00 AM PDT
Extended Forecast for

San Mateo CA

Heat Advisory March 19, 03:25am until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 19, 03:25am until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Overnight

    Low: 58 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 90. Calm wind becoming north around 6 mph in the afternoon.

    High: 90 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 59. West northwest wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 88. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 57. West wind 3 to 6 mph.

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

Detailed Forecast

Overnight
Clear, with a low around 58. Calm wind.
Thursday
Sunny, with a high near 90. Calm wind becoming north around 6 mph in the afternoon.
Thursday Night
Clear, with a low around 59. West northwest wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 88. Calm wind becoming northwest around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 57. West wind 3 to 6 mph.
Saturday
Mostly sunny, with a high near 77.
Saturday Night
Mostly clear, with a low around 50.
Sunday
Sunny, with a high near 75.
Sunday Night
Mostly clear, with a low around 50.
Monday
Sunny, with a high near 76.
Monday Night
Mostly clear, with a low around 53.
Tuesday
Sunny, with a high near 76.
Tuesday Night
Mostly clear, with a low around 51.
Wednesday
Sunny, with a high near 70.
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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:
2:33 am PDT Mar 19, 2026
Forecast Valid:
3am PDT Mar 19, 2026-6pm PDT Mar 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation