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

Heavy Rainfall in the Southwest and Southeast This Weekend; Monitoring Tropical Cyclone Formation Which Could Impact the Southeast U.S.

Heavy rainfall from monsoon thunderstorms may bring isolated flash and urban flooding to the Desert Southwest. A near-stationary front will bring numerous showers and thunderstorms to much of the Mid-Atlantic and Southeast. Tropical wave (AL94) is likely to become a depression. Significant uncertainty remains in the track and intensity, but chances for impacts to the Southeast are increasing. Read More >

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

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

Mostly Cloudy

63°F

17°C

Humidity 80%
Wind Speed N 0 MPH
Barometer 29.9 in (1012.53 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 26 Sep 08:56 AM PDT
Extended Forecast for

Hillsborough CA

  • Today

    Today: Sunny, with a high near 83. Light and variable wind becoming west southwest 6 to 11 mph in the afternoon.

    High: 83 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 57. Southwest wind 8 to 11 mph.

    Low: 57 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 74. South southwest wind 11 to 20 mph, with gusts as high as 25 mph.

    High: 74 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 58. South southwest wind 11 to 20 mph, with gusts as high as 25 mph.

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 75. South southwest wind around 10 mph.

    High: 75 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 59.

    Low: 59 °F

    Slight Chance
    Rain

  • Monday

    Monday: A 50 percent chance of rain. Partly sunny, with a high near 76.

    High: 76 °F

    Chance Rain

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 58.

    Low: 58 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of rain. Partly sunny, with a high near 74.

    High: 74 °F

    Chance Rain

Detailed Forecast

Today
Sunny, with a high near 83. Light and variable wind becoming west southwest 6 to 11 mph in the afternoon.
Tonight
Clear, with a low around 57. Southwest wind 8 to 11 mph.
Saturday
Sunny, with a high near 74. South southwest wind 11 to 20 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 58. South southwest wind 11 to 20 mph, with gusts as high as 25 mph.
Sunday
Mostly sunny, with a high near 75. South southwest wind around 10 mph.
Sunday Night
A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 59.
Monday
A 50 percent chance of rain. Partly sunny, with a high near 76.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 58.
Tuesday
A chance of rain. Partly sunny, with a high near 74.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 58.
Wednesday
A chance of rain. Mostly sunny, with a high near 76.
Wednesday Night
Mostly clear, with a low around 55.
Thursday
Sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hillsborough CA
 37.55°N 122.38°W (Elev. 463 ft)
Last Update:
8:38 am PDT Sep 26, 2025
Forecast Valid:
9am PDT Sep 26, 2025-6pm PDT Oct 2, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation