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

Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

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

Mostly Cloudy

60°F

16°C

Humidity 83%
Wind Speed WSW 3 MPH
Barometer 29.89 in (1012.19 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 17 Jun 03:56 AM PDT
Extended Forecast for

Hillsborough CA

Coastal Flood Advisory June 17, 04:10am until June 18, 05:00am
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory June 17, 04:10am until June 18, 05:00am

    NOW until 5:00am Thu

    Coastal Flood Advisory

  • Overnight

    Low: 56 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 73. South southwest wind 5 to 15 mph, with gusts as high as 24 mph.

    High: 73 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 56. South southwest wind 7 to 14 mph, with gusts as high as 24 mph.

    Low: 56 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 72. South southwest wind 6 to 15 mph, with gusts as high as 28 mph.

    High: 72 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 56. Southwest wind 8 to 16 mph, with gusts as high as 28 mph.

    Low: 56 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

Detailed Forecast

Overnight
Mostly cloudy, with a low around 56. Southwest wind around 5 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 73. South southwest wind 5 to 15 mph, with gusts as high as 24 mph.
Wednesday Night
Increasing clouds, with a low around 56. South southwest wind 7 to 14 mph, with gusts as high as 24 mph.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 72. South southwest wind 6 to 15 mph, with gusts as high as 28 mph.
Thursday Night
Partly cloudy, with a low around 56. Southwest wind 8 to 16 mph, with gusts as high as 28 mph.
Juneteenth
Mostly sunny, with a high near 71.
Friday Night
Partly cloudy, with a low around 56.
Saturday
Mostly sunny, with a high near 71.
Saturday Night
Patchy fog between midnight and 4am. Otherwise, partly cloudy, with a low around 54.
Sunday
Mostly sunny, with a high near 70.
Sunday Night
Patchy fog. Otherwise, partly cloudy, with a low around 53.
Monday
Mostly sunny, with a high near 71.
Monday Night
Patchy fog. Otherwise, partly cloudy, with a low around 54.
Tuesday
Mostly sunny, with a high near 73.
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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:
1:26 am PDT Jun 17, 2026
Forecast Valid:
4am PDT Jun 17, 2026-6pm PDT Jun 23, 2026
 
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Additional Resources

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Chance of Precipitation