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

Areas of Heavy Rainfall and Heat Early This Week

Excessive rainfall may produce locally considerable flash flooding over parts of South Texas, the western Gulf Coast, and lower Mississippi River Valley today into Thursday. Rainfall totals of 5 to 10 inches are expected. Hot temperatures may cause heat illnesses over central and northern California and the Pacific Northwest through Tuesday. 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

3 Miles SSW Clayton CA

  • Tonight

    Tonight: Mostly clear, with a low around 54. South southwest wind 11 to 14 mph, with gusts as high as 23 mph.

    Low: 54 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 83. West southwest wind 8 to 13 mph, with gusts as high as 24 mph.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 56. Southwest wind 10 to 13 mph, with gusts as high as 24 mph.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82. West wind 9 to 11 mph, with gusts as high as 22 mph.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 54. West southwest wind 11 to 14 mph, with gusts as high as 25 mph.

    Low: 54 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 54. South southwest wind 11 to 14 mph, with gusts as high as 23 mph.
Tuesday
Sunny, with a high near 83. West southwest wind 8 to 13 mph, with gusts as high as 24 mph.
Tuesday Night
Mostly clear, with a low around 56. Southwest wind 10 to 13 mph, with gusts as high as 24 mph.
Wednesday
Sunny, with a high near 82. West wind 9 to 11 mph, with gusts as high as 22 mph.
Wednesday Night
Mostly clear, with a low around 54. West southwest wind 11 to 14 mph, with gusts as high as 25 mph.
Thursday
Sunny, with a high near 78.
Thursday Night
Mostly clear, with a low around 54.
Juneteenth
Sunny, with a high near 74.
Friday Night
Mostly clear, with a low around 53.
Saturday
Sunny, with a high near 74.
Saturday Night
Mostly clear, with a low around 51.
Sunday
Sunny, with a high near 75.
Sunday Night
Mostly clear, with a low around 51.
Monday
Sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Clayton CA
 37.89°N 121.95°W (Elev. 1601 ft)
Last Update:
1:26 pm PDT Jun 15, 2026
Forecast Valid:
9pm PDT Jun 15, 2026-6pm PDT Jun 22, 2026
 
Forecast Discussion
 
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Additional Resources

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