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

Snow Squalls May Impact the Northeast on Thursday; Dangerously Cold Arctic Air Impact the North-Central US

Snow showers and snow squalls are likely to develop across the Northeast on Thursday. Lake effect snow will persist downwind of the Great Lakes. An arctic blast will bring frigid temperatures, gusty winds and dangerous wind chills to the Northern Plains before expanding to the South and East. A major winter storm will begin impacting the Southern Plains and Lower Mississippi Valley Friday. Read More >

Current conditions at

SAN FRANCISCO DOWNTOWN (SFOC1)

Lat: 37.77056°NLon: 122.42694°WElev: 150.0ft.

NA

54°F

12°C

Humidity 69%
Wind Speed NA NA MPH
Barometer NA
Dewpoint 44°F (7°C)
Visibility NA
Last update 21 Jan 06:43 PM PST
Extended Forecast for

San Francisco CA

  • Tonight

    Tonight: Mostly cloudy, with a low around 49. Calm wind.

    Low: 49 °F

    Mostly Cloudy

  • Thursday

    Thursday: Patchy fog before 10am. Otherwise, mostly sunny, with a high near 60. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 60 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog after midnight. Otherwise, increasing clouds, with a low around 48. West southwest wind 3 to 6 mph.

    Low: 48 °F

    Partly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 11am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 59. Light and variable wind.

    High: 59 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 46. Northwest wind around 5 mph becoming light and variable after midnight.

    Low: 46 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Saturday Night

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

    Low: 44 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 59.

    High: 59 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 49. Calm wind.
Thursday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 60. Calm wind becoming west 5 to 7 mph in the afternoon.
Thursday Night
Patchy fog after midnight. Otherwise, increasing clouds, with a low around 48. West southwest wind 3 to 6 mph.
Friday
Patchy fog before 11am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 59. Light and variable wind.
Friday Night
Mostly clear, with a low around 46. Northwest wind around 5 mph becoming light and variable after midnight.
Saturday
Sunny, with a high near 62.
Saturday Night
Mostly clear, with a low around 44.
Sunday
Partly sunny, with a high near 59.
Sunday Night
Mostly cloudy, with a low around 45.
Monday
Mostly sunny, with a high near 60.
Monday Night
Partly cloudy, with a low around 46.
Tuesday
Mostly sunny, with a high near 61.
Tuesday Night
A slight chance of rain. Mostly cloudy, with a low around 48.
Wednesday
A chance of rain. Mostly cloudy, with a high near 60.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
San Francisco CA
 37.77°N 122.41°W (Elev. 131 ft)
Last Update:
2:22 pm PST Jan 21, 2026
Forecast Valid:
7pm PST Jan 21, 2026-6pm PST Jan 28, 2026
 
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Additional Resources

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