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

Major Winter Storm to Impact the Mid-Atlantic and Northeast; Inclement Weather in the Pacific Northwest

A major winter storm is expected to bring heavy snow, strong winds, and coastal flooding across the Mid-Atlantic and Northeast that may cause impossible travel conditions and power outages. Blizzard conditions are possible along the Northeastern Seaboard. Wet weather and strong winds return to the Pacific Northwest and north-central California. Read More >

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

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

Mostly Cloudy

57°F

14°C

Humidity 87%
Wind Speed NE 5 MPH
Barometer 30.15 in (1021.0 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 23 Feb 02:00 PM PST
Extended Forecast for

Foster City CA

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 67. Light northwest wind.

    High: 67 °F

    Partly Sunny

  • Tonight

    Tonight: A 50 percent chance of rain, mainly after 10pm. Mostly cloudy, with a low around 54. Light and variable wind becoming south southeast around 5 mph after midnight. New precipitation amounts of less than a tenth of an inch possible.

    Low: 54 °F

    Chance Rain

  • Tuesday

    Tuesday: Rain. High near 66. South southeast wind 7 to 10 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 66 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before 8pm. Cloudy, with a low around 54. South southeast wind 3 to 6 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 54 °F

    Rain Likely

  • Wednesday

    Wednesday: A 20 percent chance of rain before 10am. Partly sunny, with a high near 64. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 64 °F

    Slight Chance
    Rain then
    Partly Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 49.

    Low: 49 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 69.

    High: 69 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 69.

    High: 69 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Partly sunny, with a high near 67. Light northwest wind.
Tonight
A 50 percent chance of rain, mainly after 10pm. Mostly cloudy, with a low around 54. Light and variable wind becoming south southeast around 5 mph after midnight. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Rain. High near 66. South southeast wind 7 to 10 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday Night
Rain likely, mainly before 8pm. Cloudy, with a low around 54. South southeast wind 3 to 6 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
A 20 percent chance of rain before 10am. Partly sunny, with a high near 64. Calm wind becoming northwest around 5 mph in the afternoon.
Wednesday Night
Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 49.
Thursday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 69.
Thursday Night
Mostly cloudy, with a low around 52.
Friday
Mostly cloudy, with a high near 69.
Friday Night
Mostly cloudy, with a low around 52.
Saturday
Mostly cloudy, with a high near 68.
Saturday Night
A slight chance of rain. Mostly cloudy, with a low around 52.
Sunday
A slight chance of rain. Partly sunny, with a high near 65.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Foster City CA
 37.57°N 122.27°W (Elev. 3 ft)
Last Update:
2:11 pm PST Feb 23, 2026
Forecast Valid:
2pm PST Feb 23, 2026-6pm PST Mar 1, 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