Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

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

Clear

64°F

18°C

Humidity 77%
Wind Speed NW 10 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 27 Aug 09:20 AM PDT
Extended Forecast for

2 Miles NNW San Mateo CA

  • Today

    Today: Partly sunny, with a high near 75. Light west northwest wind becoming west 5 to 10 mph in the afternoon.

    High: 75 °F

    Partly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 60. West wind 6 to 11 mph becoming light southwest  after midnight. Winds could gust as high as 22 mph.

    Low: 60 °F

    Increasing
    Clouds

  • Friday

    Friday: A 20 percent chance of showers before 11am.  Mostly cloudy, with a high near 71. Light west wind increasing to 6 to 11 mph in the morning.

    High: 71 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 56. West wind 6 to 15 mph, with gusts as high as 22 mph.

    Low: 56 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 69. West wind 5 to 14 mph, with gusts as high as 21 mph.

    High: 69 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 75. Light west northwest wind becoming west 5 to 10 mph in the afternoon.
Tonight
Increasing clouds, with a low around 60. West wind 6 to 11 mph becoming light southwest after midnight. Winds could gust as high as 22 mph.
Friday
A 20 percent chance of showers before 11am. Mostly cloudy, with a high near 71. Light west wind increasing to 6 to 11 mph in the morning.
Friday Night
Partly cloudy, with a low around 56. West wind 6 to 15 mph, with gusts as high as 22 mph.
Saturday
Mostly sunny, with a high near 69. West wind 5 to 14 mph, with gusts as high as 21 mph.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Mostly sunny, with a high near 69.
Sunday Night
Mostly clear, with a low around 56.
Monday
Mostly sunny, with a high near 66.
Monday Night
Partly cloudy, with a low around 56.
Tuesday
Mostly sunny, with a high near 68.
Tuesday Night
Partly cloudy, with a low around 56.
Wednesday
Mostly sunny, with a high near 70.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW San Mateo CA
 37.58°N 122.33°W (Elev. 33 ft)
6:47 am PDT Aug 27, 2026
9am PDT Aug 27, 2026-6pm PDT Sep 2, 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