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

Heavy Rainfall and Severe Thunderstorms in the Midwest and Ohio Valley Tuesday

Multiple rounds of severe thunderstorms appear likely Tuesday across the Midwest and Ohio Valley, with severe wind gusts in excess of 75 mph as the primary threat. Heavy to excessive rainfall may lead to considerable flash and urban flooding impacts Tuesday across portions of the Ohio Valley. A Moderate Risk (level 3 of 4) of excessive rainfall has been issued. Read More >

Hazardous Weather Conditions

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

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

Clear

61°F

16°C

Humidity 77%
Wind Speed W 10 MPH
Barometer 29.94 in (1013.89 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 11 Aug 12:00 AM PDT
Extended Forecast for

Hillsborough CA

Coastal Flood Advisory August 11, 12:30am until August 13, 02:00am
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory August 11, 12:30am until August 13, 02:00am

    NOW until 2:00am Thu

    Coastal Flood Advisory

  • Overnight

    Low: 56 °F

    Slight Chance
    Drizzle

  • Tuesday

    Tuesday: A slight chance of drizzle before 10am. Sunny, with a high near 77. South southwest wind 6 to 14 mph, with gusts as high as 21 mph.

    High: 77 °F

    Slight Chance
    Drizzle then
    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of drizzle after 2am. Increasing clouds, with a low around 56. Southwest wind 6 to 10 mph.

    Low: 56 °F

    Mostly Clear
    then Slight
    Chance
    Drizzle

  • Wednesday

    Wednesday: A slight chance of drizzle before 8am. Partly sunny, with a high near 76. Southwest wind 6 to 13 mph, with gusts as high as 22 mph.

    High: 76 °F

    Slight Chance
    Drizzle then
    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 58. South southwest wind 11 to 14 mph, with gusts as high as 23 mph.

    Low: 58 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 72.

    High: 72 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 57.

    Low: 57 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 74.

    High: 74 °F

    Partly Sunny

Detailed Forecast

Overnight
A slight chance of drizzle after 1am. Mostly clear, with a low around 56. Southwest wind around 7 mph.
Tuesday
A slight chance of drizzle before 10am. Sunny, with a high near 77. South southwest wind 6 to 14 mph, with gusts as high as 21 mph.
Tuesday Night
A slight chance of drizzle after 2am. Increasing clouds, with a low around 56. Southwest wind 6 to 10 mph.
Wednesday
A slight chance of drizzle before 8am. Partly sunny, with a high near 76. Southwest wind 6 to 13 mph, with gusts as high as 22 mph.
Wednesday Night
Mostly cloudy, with a low around 58. South southwest wind 11 to 14 mph, with gusts as high as 23 mph.
Thursday
Partly sunny, with a high near 72.
Thursday Night
Mostly cloudy, with a low around 57.
Friday
Partly sunny, with a high near 74.
Friday Night
Partly cloudy, with a low around 57.
Saturday
Mostly sunny, with a high near 74.
Saturday Night
Partly cloudy, with a low around 56.
Sunday
Mostly sunny, with a high near 72.
Sunday Night
Partly cloudy, with a low around 56.
Monday
Partly sunny, with a high near 72.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hillsborough CA
 37.55°N 122.38°W (Elev. 463 ft)
Last Update:
12:16 am PDT Aug 11, 2026
Forecast Valid:
12am PDT Aug 11, 2026-6pm PDT Aug 17, 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