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Severe Storms and Heavy Rain in Texas; Record Heat Along the East Coast

Scattered severe storms with large hail, isolated severe gusts, and localized flooding are expected across parts of west Texas. Isolated flash flooding is also possible in the central Gulf coast. An early season heat wave will continue to impact the eastern U.S. today, before isolated severe storms move across the central Appalachians into the Mid-Atlantic and far southern New England. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

56°F

13°C

Humidity 28%
Wind Speed NW 9 MPH
Barometer NA
Dewpoint 23°F (-5°C)
Visibility NA
Last update 17 May 05:05 PM PDT
Extended Forecast for

4 Miles SSE Clayton CA

  • Tonight

    Tonight: Clear, with a low around 59. South southwest wind 8 to 11 mph, with gusts as high as 21 mph.

    Low: 59 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 78. West wind 6 to 11 mph, with gusts as high as 22 mph.

    High: 78 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 57. Southwest wind 11 to 13 mph, with gusts as high as 23 mph.

    Low: 57 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 73. West southwest wind 9 to 13 mph, with gusts as high as 23 mph.

    High: 73 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 54. West southwest wind around 14 mph, with gusts as high as 26 mph.

    Low: 54 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

Detailed Forecast

Tonight
Clear, with a low around 59. South southwest wind 8 to 11 mph, with gusts as high as 21 mph.
Thursday
Sunny, with a high near 78. West wind 6 to 11 mph, with gusts as high as 22 mph.
Thursday Night
Clear, with a low around 57. Southwest wind 11 to 13 mph, with gusts as high as 23 mph.
Friday
Sunny, with a high near 73. West southwest wind 9 to 13 mph, with gusts as high as 23 mph.
Friday Night
Mostly clear, with a low around 54. West southwest wind around 14 mph, with gusts as high as 26 mph.
Saturday
Sunny, with a high near 66.
Saturday Night
Mostly clear, with a low around 51.
Sunday
Sunny, with a high near 63.
Sunday Night
Mostly clear, with a low around 49.
Memorial Day
Sunny, with a high near 61.
Monday Night
Mostly clear, with a low around 50.
Tuesday
Sunny, with a high near 67. Breezy.
Tuesday Night
Mostly clear, with a low around 50.
Wednesday
Sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Clayton CA
 37.87°N 121.92°W (Elev. 2818 ft)
Last Update:
1:26 pm PDT May 20, 2026
Forecast Valid:
4pm PDT May 20, 2026-6pm PDT May 27, 2026
 
Forecast Discussion
 
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Additional Resources

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