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

Strong Storm System Brings Heavy Mountain Snow to the Sierra Nevada and Critical Fire Weather Conditions to the Plains

A Pacific storm system will continue to bring low elevation rain and mountain snow to much of the West through Wednesday, with heavy mountain snow expected in the higher elevations of the Sierra Nevada. This system will also bring strong winds to the Intermountain West, Rockies, and Plains, which will create Critical fire weather conditions for the High Plains. Read More >

Current conditions at

SAN FRANCISCO DOWNTOWN (SFOC1)

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

NA

55°F

13°C

Humidity 69%
Wind Speed NA NA MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Last update 21 Apr 09:43 PM PDT
Extended Forecast for

San Francisco CA

  • Tonight

    Tonight: A chance of rain, mainly between 2am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 51. West southwest wind around 7 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 51 °F

    Partly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: Rain and thunderstorms likely before 1pm, then a slight chance of showers and thunderstorms between 1pm and 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 65. South southeast wind 5 to 7 mph becoming north northwest in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 65 °F

    Showers
    Likely then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 50. North northwest wind 3 to 7 mph.

    Low: 50 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 68. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 68 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 51. West wind 5 to 10 mph.

    Low: 51 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 66.

    High: 66 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 64.

    High: 64 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of rain, mainly between 2am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 51. West southwest wind around 7 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Rain and thunderstorms likely before 1pm, then a slight chance of showers and thunderstorms between 1pm and 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 65. South southeast wind 5 to 7 mph becoming north northwest in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Mostly clear, with a low around 50. North northwest wind 3 to 7 mph.
Thursday
Sunny, with a high near 68. Calm wind becoming west 5 to 7 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 51. West wind 5 to 10 mph.
Friday
Partly sunny, with a high near 66.
Friday Night
Mostly cloudy, with a low around 53.
Saturday
Partly sunny, with a high near 64.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
Mostly sunny, with a high near 65.
Sunday Night
Partly cloudy, with a low around 51.
Monday
Mostly sunny, with a high near 67.
Monday Night
Partly cloudy, with a low around 52.
Tuesday
A slight chance of rain. Mostly sunny, with a high near 68.
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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:
8:32 pm PDT Apr 21, 2026
Forecast Valid:
10pm PDT Apr 21, 2026-6pm PDT Apr 28, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation