Severe Weather and Heavy Rain from the Mid-South to the Mid-Atlantic; Building Heat in the West

Severe thunderstorms may bring damaging winds, a couple of tornadoes, and heavy rain across portions of the Mid-Atlantic into the Mid-South. Severe storms may produce hail across the northern/central High Plains. Hazardous heat will linger across the southern U.S. and build across the West through mid-week. Fire weather concerns continue for Interior Alaska and the Four Corners region. 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 S Clayton CA

  • Today

    Today: Sunny, with a high near 74. West southwest wind 9 to 11 mph, with gusts as high as 22 mph.

    High: 74 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 56. Southwest wind 11 to 14 mph, with gusts as high as 24 mph.

    Low: 56 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 76. West southwest wind 9 to 11 mph, with gusts as high as 21 mph.

    High: 76 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 57. Southwest wind 10 to 13 mph, with gusts as high as 22 mph.

    Low: 57 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 77. West wind around 10 mph, with gusts as high as 21 mph.

    High: 77 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Thursday Night

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

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 69. Breezy.

    High: 69 °F

    Mostly Sunny
    and Breezy
    then Sunny

Detailed Forecast

Today
Sunny, with a high near 74. West southwest wind 9 to 11 mph, with gusts as high as 22 mph.
Tonight
Clear, with a low around 56. Southwest wind 11 to 14 mph, with gusts as high as 24 mph.
Tuesday
Sunny, with a high near 76. West southwest wind 9 to 11 mph, with gusts as high as 21 mph.
Tuesday Night
Clear, with a low around 57. Southwest wind 10 to 13 mph, with gusts as high as 22 mph.
Wednesday
Sunny, with a high near 77. West wind around 10 mph, with gusts as high as 21 mph.
Wednesday Night
Mostly clear, with a low around 59.
Thursday
Sunny, with a high near 74.
Thursday Night
Mostly clear, with a low around 58.
Friday
Sunny, with a high near 69. Breezy.
Friday Night
Mostly clear, with a low around 57. Breezy.
Saturday
Sunny, with a high near 66.
Saturday Night
Clear, with a low around 53.
Sunday
Sunny, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Clayton CA
 37.9°N 121.92°W (Elev. 1900 ft)
9:47 am PDT Jun 22, 2026
11am PDT Jun 22, 2026-6pm PDT Jun 28, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database