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

57°F

14°C

Humidity 61%
Wind Speed NA NA MPH
Barometer NA
Dewpoint 44°F (7°C)
Visibility NA
Last update 21 Jan 03:43 PM PST
Extended Forecast for

San Francisco CA

  • This Afternoon

    This Afternoon: Isolated sprinkles before 5pm. Cloudy, with a high near 59. Light northwest wind.

    High: 59 °F

    Isolated
    Sprinkles

  • Tonight

    Tonight: Mostly cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Mostly Cloudy

  • Thursday

    Thursday: Patchy fog before 10am. Otherwise, mostly sunny, with a high near 60. Calm wind becoming west around 6 mph in the afternoon.

    High: 60 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 48. West wind around 5 mph becoming calm after midnight.

    Low: 48 °F

    Partly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 11am. Otherwise, partly sunny, with a high near 59. Calm wind becoming north around 5 mph in the afternoon.

    High: 59 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 45.

    Low: 45 °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 43.

    Low: 43 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 59.

    High: 59 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Isolated sprinkles before 5pm. Cloudy, with a high near 59. Light northwest wind.
Tonight
Mostly cloudy, with a low around 48. Calm wind.
Thursday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 60. Calm wind becoming west around 6 mph in the afternoon.
Thursday Night
Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 48. West wind around 5 mph becoming calm after midnight.
Friday
Patchy fog before 11am. Otherwise, partly sunny, with a high near 59. Calm wind becoming north around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 45.
Saturday
Sunny, with a high near 62.
Saturday Night
Mostly clear, with a low around 43.
Sunday
Partly sunny, with a high near 59.
Sunday Night
Mostly cloudy, with a low around 44.
Monday
Mostly sunny, with a high near 60.
Monday Night
Partly cloudy, with a low around 44.
Tuesday
Mostly sunny, with a high near 61.
Tuesday Night
A slight chance of rain. Mostly cloudy, with a low around 47.
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
 37.75°N 122.43°W (Elev. 197 ft)
Last Update:
2:22 pm PST Jan 21, 2026
Forecast Valid:
4pm PST Jan 21, 2026-6pm PST Jan 28, 2026
 
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