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

Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across much of northeast Texas into the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Saturday could bring areas of flooding across parts of the central Plains into the upper Midwest/Great Lakes, and Four Corners states. 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 WSW 6 MPH
Barometer 30.01 in (1016.26 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 17 Sep 01:56 AM PDT
Extended Forecast for

Hillsborough CA

  • Overnight

    Overnight: Mostly cloudy, with a low around 59. Southwest wind around 5 mph.

    Low: 59 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 74. West southwest wind 5 to 8 mph.

    High: 74 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 58. West wind around 6 mph becoming calm in the evening.

    Low: 58 °F

    Increasing
    Clouds

  • Friday

    Friday: Mostly cloudy through mid morning, then gradual clearing, with a high near 77. Light west wind becoming west northwest 5 to 10 mph in the afternoon.

    High: 77 °F

    Becoming
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 58. West southwest wind 6 to 11 mph, with gusts as high as 18 mph.

    Low: 58 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 74.

    High: 74 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 58.

    Low: 58 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 59. Southwest wind around 5 mph.
Thursday
Mostly sunny, with a high near 74. West southwest wind 5 to 8 mph.
Thursday Night
Increasing clouds, with a low around 58. West wind around 6 mph becoming calm in the evening.
Friday
Mostly cloudy through mid morning, then gradual clearing, with a high near 77. Light west wind becoming west northwest 5 to 10 mph in the afternoon.
Friday Night
Mostly clear, with a low around 58. West southwest wind 6 to 11 mph, with gusts as high as 18 mph.
Saturday
Mostly sunny, with a high near 79.
Saturday Night
Partly cloudy, with a low around 58.
Sunday
Partly sunny, with a high near 74.
Sunday Night
Mostly cloudy, with a low around 58.
Monday
Mostly sunny, with a high near 76.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
Mostly clear, with a low around 58.
Wednesday
Sunny, with a high near 81.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hillsborough CA
 37.56°N 122.33°W (Elev. 108 ft)
Last Update:
1:27 am PDT Sep 17, 2026
Forecast Valid:
2am PDT Sep 17, 2026-6pm PDT Sep 23, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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