Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

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

Clear

52°F

11°C

Humidity 87%
Wind Speed NNE 5 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 21 Jan 05:30 AM PST
Extended Forecast for

San Francisco International Airport CA

  • Today

    Today: A 10 percent chance of rain after 4pm.  Cloudy, with a high near 59. Calm wind.

    High: 59 °F

    Cloudy then
    Slight Chance
    Rain

  • Tonight

    Tonight: A 20 percent chance of rain before 10pm.  Mostly cloudy, with a low around 50. Calm wind.

    Low: 50 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Thursday

    Thursday: Patchy fog before 9am.  Otherwise, partly sunny, with a high near 59. Light west wind.

    High: 59 °F

    Patchy Fog
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog after midnight.  Otherwise, mostly cloudy, 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 9am.  Otherwise, mostly sunny, with a high near 58. Light and variable wind.

    High: 58 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

  • Saturday Night

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

    Low: 45 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 59.

    High: 59 °F

    Partly Sunny

Detailed Forecast

Today
A 10 percent chance of rain after 4pm. Cloudy, with a high near 59. Calm wind.
Tonight
A 20 percent chance of rain before 10pm. Mostly cloudy, with a low around 50. Calm wind.
Thursday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 59. Light west wind.
Thursday Night
Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 48. West southwest wind 3 to 6 mph.
Friday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 58. Light and variable wind.
Friday Night
Mostly clear, with a low around 47.
Saturday
Sunny, with a high near 59.
Saturday Night
Mostly clear, with a low around 45.
Sunday
Partly sunny, with a high near 59.
Sunday Night
Mostly cloudy, with a low around 46.
Monday
Partly sunny, with a high near 60.
Monday Night
Partly cloudy, with a low around 46.
Tuesday
Partly sunny, with a high near 60.
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ABOUT THIS FORECAST

 
Point Forecast:
San Francisco International Airport CA
 37.62°N 122.37°W (Elev. 3 ft)
2:13 am PST Jan 21, 2026
5am PST Jan 21, 2026-6pm PST Jan 27, 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