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 20%
Wind Speed WSW 7 MPH
Barometer NA
Dewpoint 36°F (2°C)
Visibility NA
Heat Index79°F (26°C)
Last update 12 Jul 10:05 PM PDT
Extended Forecast for

3 Miles S Clayton CA

  • Tonight

    Tonight: Areas of smoke between 1am and 3am. Clear, with a low around 64. Southwest wind 10 to 13 mph, with gusts as high as 22 mph.

    Low: 64 °F

    Clear then
    Areas Smoke

  • Sunday

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

    High: 82 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 65. West southwest wind around 11 mph, with gusts as high as 22 mph.

    Low: 65 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 83. West wind 8 to 10 mph, with gusts as high as 20 mph.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 61. West southwest wind around 13 mph, with gusts as high as 23 mph.

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

Detailed Forecast

Tonight
Areas of smoke between 1am and 3am. Clear, with a low around 64. Southwest wind 10 to 13 mph, with gusts as high as 22 mph.
Sunday
Sunny, with a high near 82. West southwest wind 9 to 11 mph, with gusts as high as 22 mph.
Sunday Night
Clear, with a low around 65. West southwest wind around 11 mph, with gusts as high as 22 mph.
Monday
Sunny, with a high near 83. West wind 8 to 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 61. West southwest wind around 13 mph, with gusts as high as 23 mph.
Tuesday
Sunny, with a high near 77.
Tuesday Night
Mostly clear, with a low around 61.
Wednesday
Sunny, with a high near 73.
Wednesday Night
Mostly clear, with a low around 61.
Thursday
Sunny, with a high near 74.
Thursday Night
Mostly clear, with a low around 61.
Friday
Sunny, with a high near 76.
Friday Night
Mostly clear, with a low around 61.
Saturday
Sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Clayton CA
 37.9°N 121.92°W (Elev. 1900 ft)
Last Update:
3:36 pm PDT Jul 12, 2025
Forecast Valid:
10pm PDT Jul 12, 2025-6pm PDT Jul 19, 2025
 
Forecast Discussion
 
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