Significant Winter Storm to Bring Heavy Snow and Ice Impacts; Dangerously Cold Temperatures Expands Across the East

A significant, long-duration winter storm will bring widespread heavy snow, sleet, and freezing rain from the Southern Rockies to New England through Monday. Widespread travel disruptions, prolonged power outages, and vast tree damage is likely. Frigid temperatures, gusty winds, and dangerous wind chills will expand from the north-central US to the Southern Plains, MS Valley, and Midwest. 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 89%
Wind Speed SW 3 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 23 Jan 02:56 AM PST
Extended Forecast for

Foster City CA

  • Overnight

    Overnight: Areas of dense fog.  Otherwise, mostly cloudy, with a low around 46. Calm wind.

    Low: 46 °F

    Areas Dense
    Fog

  • Friday

    Friday: Areas of dense fog before 10am.  Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 59. Calm wind becoming north northwest 5 to 7 mph in the afternoon.

    High: 59 °F

    Areas Dense
    Fog then
    Mostly Sunny

  • Friday Night

    Friday Night: Patchy fog after 10pm.  Otherwise, partly cloudy, with a low around 44. West northwest wind around 5 mph becoming calm  in the evening.

    Low: 44 °F

    Patchy Fog

  • Saturday

    Saturday: Sunny, with a high near 62. East wind 5 to 9 mph becoming north in the afternoon.

    High: 62 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 41. Calm wind becoming northeast around 5 mph.

    Low: 41 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly cloudy, with a high near 60.

    High: 60 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

Detailed Forecast

Overnight
Areas of dense fog. Otherwise, mostly cloudy, with a low around 46. Calm wind.
Friday
Areas of dense fog before 10am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 59. Calm wind becoming north northwest 5 to 7 mph in the afternoon.
Friday Night
Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 44. West northwest wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 62. East wind 5 to 9 mph becoming north in the afternoon.
Saturday Night
Mostly clear, with a low around 41. Calm wind becoming northeast around 5 mph.
Sunday
Mostly cloudy, with a high near 60.
Sunday Night
Mostly cloudy, with a low around 46.
Monday
Mostly sunny, with a high near 63.
Monday Night
Mostly clear, with a low around 44.
Tuesday
Mostly sunny, with a high near 63.
Tuesday Night
Mostly cloudy, with a low around 47.
Wednesday
A slight chance of rain. Partly sunny, with a high near 62.
Wednesday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 46.
Thursday
Patchy fog. Otherwise, mostly sunny, with a high near 63.
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ABOUT THIS FORECAST

 
Point Forecast:
Foster City CA
 37.57°N 122.27°W (Elev. 3 ft)
12:26 am PST Jan 23, 2026
3am PST Jan 23, 2026-6pm PST Jan 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