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

Fire Weather Issues; Pacific System Moving Inland

Dry fuels, strong winds and dry weather will continue to bring elevated to critical fire weather conditions to the areas of the Plains, Midwest and Southeast today. A Pacific storm system will bring low elevation rain and heavy high elevation mountain snow to California through early week, expanding into the Pacific Northwest, Great Basin, and southern California on Tuesday. Read More >

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

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

Rain

59°F

15°C

Humidity 67%
Wind Speed SE 14 MPH
Barometer 29.89 in (1012.19 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 20 Apr 09:00 AM PDT
Extended Forecast for

Foster City CA

  • Today

    Today: Rain likely and possibly a thunderstorm before 4pm, then showers and possibly a thunderstorm between 4pm and 5pm, then rain and possibly a thunderstorm after 5pm. High near 69. South southwest wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 69 °F

    Chance Rain
    then Showers

  • Tonight

    Tonight: Rain. Low around 53. Southwest wind 5 to 11 mph becoming south southeast after midnight. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 53 °F

    Rain

  • Tuesday

    Tuesday: Rain before 8am, then showers and possibly a thunderstorm after 8am. High near 64. South southwest wind 5 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 64 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 11pm, then rain likely after 11pm. Mostly cloudy, with a low around 51. West southwest wind 5 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 51 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A 30 percent chance of rain before 11am. Mostly sunny, with a high near 66. West wind 3 to 7 mph.

    High: 66 °F

    Chance Rain
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

Detailed Forecast

Today
Rain likely and possibly a thunderstorm before 4pm, then showers and possibly a thunderstorm between 4pm and 5pm, then rain and possibly a thunderstorm after 5pm. High near 69. South southwest wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Rain. Low around 53. Southwest wind 5 to 11 mph becoming south southeast after midnight. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
Rain before 8am, then showers and possibly a thunderstorm after 8am. High near 64. South southwest wind 5 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
Showers likely and possibly a thunderstorm before 11pm, then rain likely after 11pm. Mostly cloudy, with a low around 51. West southwest wind 5 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 30 percent chance of rain before 11am. Mostly sunny, with a high near 66. West wind 3 to 7 mph.
Wednesday Night
Mostly clear, with a low around 49.
Thursday
Sunny, with a high near 68.
Thursday Night
Partly cloudy, with a low around 49.
Friday
Mostly sunny, with a high near 69.
Friday Night
Partly cloudy, with a low around 51.
Saturday
Mostly sunny, with a high near 69.
Saturday Night
Partly cloudy, with a low around 51.
Sunday
Partly sunny, with a high near 68.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Foster City CA
 37.55°N 122.27°W (Elev. 33 ft)
Last Update:
2:11 am PDT Apr 20, 2026
Forecast Valid:
9am PDT Apr 20, 2026-6pm PDT Apr 26, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation