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 >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

Lat: 37.881699°NLon: 121.914173°WElev: 3904.0ft.

NA

N/A

Humidity 28%
Wind Speed NW 9 MPH
Barometer NA
Dewpoint N/A
Visibility NA
Last update 17 May 05:05 PM PDT
Extended Forecast for

4 Miles S Clayton CA

  • Today

    Today: Sunny, with a high near 73. West southwest wind 9 to 14 mph, with gusts as high as 24 mph.

    High: 73 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 63. Southwest wind 10 to 14 mph, with gusts as high as 25 mph.

    Low: 63 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a steady temperature around 69. West southwest wind 9 to 13 mph, with gusts as high as 24 mph.

    High: 69 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 60. West southwest wind around 14 mph, with gusts as high as 29 mph.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 68. West southwest wind 11 to 14 mph, with gusts as high as 25 mph.

    High: 68 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Friday Night

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

    Low: 56 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 73. West southwest wind 9 to 14 mph, with gusts as high as 24 mph.
Tonight
Clear, with a low around 63. Southwest wind 10 to 14 mph, with gusts as high as 25 mph.
Wednesday
Sunny, with a steady temperature around 69. West southwest wind 9 to 13 mph, with gusts as high as 24 mph.
Wednesday Night
Mostly clear, with a low around 60. West southwest wind around 14 mph, with gusts as high as 29 mph.
Thursday
Sunny, with a high near 68. West southwest wind 11 to 14 mph, with gusts as high as 25 mph.
Thursday Night
Mostly clear, with a low around 58.
Juneteenth
Sunny, with a high near 65.
Friday Night
Mostly clear, with a low around 56.
Saturday
Sunny, with a high near 64.
Saturday Night
Mostly clear, with a low around 54.
Sunday
Sunny, with a high near 66.
Sunday Night
Mostly clear, with a low around 54.
Monday
Sunny, with a high near 69.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Clayton CA
 37.87°N 121.92°W (Elev. 2818 ft)
Last Update:
4:27 am PDT Jun 16, 2026
Forecast Valid:
9am PDT Jun 16, 2026-6pm PDT Jun 22, 2026
 
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