Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

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

Clear

59°F

15°C

Humidity 87%
Wind Speed WNW 19 MPH
Barometer 29.91 in (1012.87 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 19 Aug 07:35 PM PDT
Extended Forecast for

Belmont CA

  • Tonight

    Tonight: Mostly clear, with a low around 58. West southwest wind 5 to 9 mph.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 73. West wind 5 to 13 mph, with gusts as high as 18 mph.

    High: 73 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 58. West wind 6 to 11 mph, with gusts as high as 18 mph.

    Low: 58 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 72. West northwest wind 6 to 11 mph.

    High: 72 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 57. West wind 7 to 14 mph, with gusts as high as 22 mph.

    Low: 57 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 58. West southwest wind 5 to 9 mph.
Thursday
Partly sunny, with a high near 73. West wind 5 to 13 mph, with gusts as high as 18 mph.
Thursday Night
Mostly cloudy, with a low around 58. West wind 6 to 11 mph, with gusts as high as 18 mph.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 72. West northwest wind 6 to 11 mph.
Friday Night
Partly cloudy, with a low around 57. West wind 7 to 14 mph, with gusts as high as 22 mph.
Saturday
Mostly sunny, with a high near 73.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Mostly sunny, with a high near 74.
Sunday Night
Mostly clear, with a low around 57.
Monday
Mostly sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 57.
Tuesday
Partly sunny, with a high near 72.
Tuesday Night
Partly cloudy, with a low around 56.
Wednesday
Mostly sunny, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
Belmont CA
 37.54°N 122.32°W (Elev. 194 ft)
1:26 pm PDT Aug 19, 2026
7pm PDT Aug 19, 2026-6pm PDT Aug 26, 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