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

52°F

11°C

Humidity 80%
Wind Speed NA NA MPH
Barometer NA
Dewpoint 46°F (8°C)
Visibility NA
Last update 22 Jan 02:43 AM PST
Extended Forecast for

San Francisco CA

  • Overnight

    Overnight: Patchy fog. Otherwise, partly cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 10am. Otherwise, mostly sunny, with a high near 63. Calm wind becoming west around 6 mph in the afternoon.

    High: 63 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Patchy fog. Otherwise, increasing clouds, with a low around 48. West wind around 5 mph becoming calm in the evening.

    Low: 48 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before noon. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 58. Light and variable wind.

    High: 58 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Patchy fog. Otherwise, partly cloudy, with a low around 45. Northwest wind around 5 mph becoming calm in the evening.

    Low: 45 °F

    Patchy Fog

  • 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

Overnight
Patchy fog. Otherwise, partly cloudy, with a low around 48. Calm wind.
Thursday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 63. Calm wind becoming west around 6 mph in the afternoon.
Thursday Night
Patchy fog. Otherwise, increasing clouds, with a low around 48. West wind around 5 mph becoming calm in the evening.
Friday
Patchy fog before noon. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 58. Light and variable wind.
Friday Night
Patchy fog. Otherwise, partly cloudy, with a low around 45. Northwest wind around 5 mph becoming calm in the evening.
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
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 61.
Monday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 45.
Tuesday
Patchy fog. Otherwise, partly sunny, with a high near 61.
Tuesday Night
A slight chance of rain. Mostly cloudy, with a low around 50.
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 122.4°W (Elev. 197 ft)
Last Update:
1:13 am PST Jan 22, 2026
Forecast Valid:
3am PST Jan 22, 2026-6pm PST Jan 28, 2026
 
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