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

Severe Thunderstorms and Excessive Rainfall in the Central U.S.; Heat Building in the Western U.S.

A cold front pressing east across the central U.S. will be the focus for areas of strong to severe thunderstorms and excessive rainfall through this weekend. Strong to severe thunderstorms my bring damaging winds, hail, and a few tornadoes while excessive rainfall may lead to areas of flooding. Heat will build across the western U.S. with heat-related watches, warnings, and advisories issued. Read More >

Current conditions at

Mount Diablo Summit Museum and Trailhead Rooftop (SJS02)

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

NA

80°F

27°C

Humidity 19%
Wind Speed WSW 8 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Heat Index79°F (26°C)
Last update 12 Jul 07:35 PM PDT
Extended Forecast for

4 Miles SSE Clayton CA

  • Tonight

    Tonight: Areas of smoke between 2am and 3am. Clear, with a low around 66. Southwest wind around 10 mph, with gusts as high as 22 mph.

    Low: 66 °F

    Clear then
    Areas Smoke

  • Sunday

    Sunday: Sunny, with a high near 80. Southwest wind 8 to 10 mph, with gusts as high as 21 mph.

    High: 80 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 66. West southwest wind around 10 mph, with gusts as high as 21 mph.

    Low: 66 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 80. West wind 7 to 10 mph, with gusts as high as 20 mph.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 63. West southwest wind around 11 mph, with gusts as high as 22 mph.

    Low: 63 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

Detailed Forecast

Tonight
Areas of smoke between 2am and 3am. Clear, with a low around 66. Southwest wind around 10 mph, with gusts as high as 22 mph.
Sunday
Sunny, with a high near 80. Southwest wind 8 to 10 mph, with gusts as high as 21 mph.
Sunday Night
Clear, with a low around 66. West southwest wind around 10 mph, with gusts as high as 21 mph.
Monday
Sunny, with a high near 80. West wind 7 to 10 mph, with gusts as high as 20 mph.
Monday Night
Clear, with a low around 63. West southwest wind around 11 mph, with gusts as high as 22 mph.
Tuesday
Sunny, with a high near 74.
Tuesday Night
Mostly clear, with a low around 62.
Wednesday
Sunny, with a high near 70.
Wednesday Night
Mostly clear, with a low around 62.
Thursday
Sunny, with a high near 71.
Thursday Night
Mostly clear, with a low around 62.
Friday
Sunny, with a high near 73.
Friday Night
Mostly clear, with a low around 62.
Saturday
Sunny, with a high near 75.
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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:
3:36 pm PDT Jul 12, 2025
Forecast Valid:
7pm PDT Jul 12, 2025-6pm PDT Jul 19, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation