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

Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

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

Mostly Cloudy

61°F

16°C

Humidity 87%
Wind Speed W 12 MPH
Barometer 30.01 in (1016.26 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 17 Aug 04:35 AM PDT
Extended Forecast for

San Carlos CA

  • Today

    Today: Partly sunny, then gradually becoming sunny, with a high near 72. West wind 7 to 15 mph, with gusts as high as 21 mph.

    High: 72 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 56. West wind 7 to 14 mph, with gusts as high as 22 mph.

    Low: 56 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, then gradually becoming sunny, with a high near 74. Light west wind becoming west northwest 5 to 10 mph in the morning.

    High: 74 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 55. West northwest wind 9 to 14 mph becoming light west after midnight. Winds could gust as high as 21 mph.

    Low: 55 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 74. Light west wind increasing to 5 to 10 mph in the afternoon.

    High: 74 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 57.

    Low: 57 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

Detailed Forecast

Today
Partly sunny, then gradually becoming sunny, with a high near 72. West wind 7 to 15 mph, with gusts as high as 21 mph.
Tonight
Partly cloudy, with a low around 56. West wind 7 to 14 mph, with gusts as high as 22 mph.
Monday
Partly sunny, then gradually becoming sunny, with a high near 74. Light west wind becoming west northwest 5 to 10 mph in the morning.
Monday Night
Mostly clear, with a low around 55. West northwest wind 9 to 14 mph becoming light west after midnight. Winds could gust as high as 21 mph.
Tuesday
Sunny, with a high near 74. Light west wind increasing to 5 to 10 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
Sunny, with a high near 80.
Wednesday Night
Clear, with a low around 57.
Thursday
Sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 56.
Friday
Sunny, with a high near 79.
Friday Night
Mostly clear, with a low around 57.
Saturday
Sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
San Carlos CA
 37.5°N 122.28°W (Elev. 200 ft)
Last Update:
2:33 am PDT Aug 17, 2025
Forecast Valid:
4am PDT Aug 17, 2025-6pm PDT Aug 23, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation