Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

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

Partly Cloudy

48°F

9°C

Humidity 76%
Wind Speed SSW 5 MPH
Barometer 30.0 in (1015.92 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 18 Apr 07:00 AM PDT
Extended Forecast for

Foster City CA

  • Today

    Today: Mostly sunny, with a high near 76. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 76 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 51. Light west wind.

    Low: 51 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 72. Calm wind becoming west southwest 5 to 7 mph in the afternoon.

    High: 72 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 51. West southwest wind 6 to 9 mph becoming south after midnight.

    Low: 51 °F

    Partly Cloudy

  • Monday

    Monday: A 50 percent chance of showers.  Partly sunny, with a high near 72. South southeast wind 6 to 11 mph.  New precipitation amounts between a tenth and quarter of an inch possible.

    High: 72 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm.  Low around 52. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 52 °F

    Showers

  • Tuesday

    Tuesday: Showers, with thunderstorms also possible after 11am.  High near 66. Chance of precipitation is 90%.

    High: 66 °F

    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 11pm, then a chance of rain after 11pm.  Mostly cloudy, with a low around 50.

    Low: 50 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of rain.  Mostly sunny, with a high near 66.

    High: 66 °F

    Slight Chance
    Rain

Detailed Forecast

Today
Mostly sunny, with a high near 76. Calm wind becoming northwest around 6 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 51. Light west wind.
Sunday
Partly sunny, with a high near 72. Calm wind becoming west southwest 5 to 7 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 51. West southwest wind 6 to 9 mph becoming south after midnight.
Monday
A 50 percent chance of showers. Partly sunny, with a high near 72. South southeast wind 6 to 11 mph. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Showers and possibly a thunderstorm. Low around 52. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
Showers, with thunderstorms also possible after 11am. High near 66. Chance of precipitation is 90%.
Tuesday Night
A chance of showers and thunderstorms before 11pm, then a chance of rain after 11pm. Mostly cloudy, with a low around 50.
Wednesday
A slight chance of rain. Mostly sunny, with a high near 66.
Wednesday Night
Mostly clear, with a low around 50.
Thursday
Mostly sunny, with a high near 68.
Thursday Night
Mostly clear, with a low around 49.
Friday
Sunny, with a high near 70.
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ABOUT THIS FORECAST

 
Point Forecast:
Foster City CA
 37.54°N 122.29°W (Elev. 151 ft)
1:41 am PDT Apr 18, 2026
7am PDT Apr 18, 2026-6pm PDT Apr 24, 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