Heavy Rain and Flooding Possible in the Southwest U.S, Ohio Valley, and Hawaii

Heavy rainfall is expected to continue through Thursday over New Mexico into far west Texas. Flash flooding and debris flows in wildfire burn areas will be possible. Heavy rain and flash flooding is also expected over the southern Appalachians and Ohio Valley. Tropical Depression 15-E, southeast of Hawaii, is expected to bring heavy rain beginning today to the Big Island and Maui. Read More >

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

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

Overcast

56°F

13°C

Humidity 93%
Wind Speed SW 3 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 23 Sep 07:56 AM PDT
Extended Forecast for

Foster City CA

  • Today

    Today: Partly sunny, then gradually becoming sunny, with a high near 69. Light and variable wind becoming west northwest 9 to 14 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 69 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 60. West northwest wind 5 to 9 mph becoming calm  in the evening.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 68. Light west northwest wind increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 22 mph.

    High: 68 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 60. West southwest wind 9 to 15 mph, with gusts as high as 23 mph.

    Low: 60 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 65. West wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 65 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 67.

    High: 67 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, then gradually becoming sunny, with a high near 69. Light and variable wind becoming west northwest 9 to 14 mph in the afternoon. Winds could gust as high as 20 mph.
Tonight
Mostly clear, with a low around 60. West northwest wind 5 to 9 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 68. Light west northwest wind increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 22 mph.
Thursday Night
Partly cloudy, with a low around 60. West southwest wind 9 to 15 mph, with gusts as high as 23 mph.
Friday
Mostly sunny, with a high near 65. West wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 25 mph.
Friday Night
Mostly clear, with a low around 58.
Saturday
Mostly sunny, with a high near 67.
Saturday Night
Partly cloudy, with a low around 56.
Sunday
Partly sunny, with a high near 67.
Sunday Night
Mostly clear, with a low around 56.
Monday
Sunny, with a high near 72.
Monday Night
Clear, with a low around 57.
Tuesday
Sunny, with a high near 73.
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ABOUT THIS FORECAST

 
Point Forecast:
Foster City CA
 37.57°N 122.24°W (Elev. 0 ft)
2:32 am PDT Sep 23, 2026
8am PDT Sep 23, 2026-6pm PDT Sep 29, 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