Heavy Rain From the Central Plains to the Mid-Atlantic; Heat Wave Begins This Weekend

Strong to severe thunderstorms and heavy rain will impact portions of the central Plains into the Upper Midwest and the Mid-Atlantic through the weekend. A stretch of unusually hot and humid weather is expected across portions of the central U.S. and the Southeast beginning this weekend and continuing through next week. The heat may reach dangerous levels, particularly mid to late next week. Read More >

Current conditions at

Mount Diablo Summit Museum and Trailhead Rooftop (SJS02)

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

NA

72°F

22°C

Humidity 31%
Wind Speed SW 4 MPH
Barometer NA
Dewpoint 39°F (4°C)
Visibility NA
Last update 18 Jul 04:25 PM PDT
Extended Forecast for

4 Miles S Clayton CA

  • Tonight

    Tonight: Mostly clear, with a low around 64. Southwest wind 10 to 16 mph, with gusts as high as 21 mph.

    Low: 64 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 75. West southwest wind 9 to 14 mph.

    High: 75 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 64. Southwest wind 10 to 14 mph.

    Low: 64 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 73. Southwest wind 9 to 15 mph, with gusts as high as 18 mph.

    High: 73 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 63. Southwest wind 13 to 15 mph, with gusts as high as 18 mph.

    Low: 63 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 64. Southwest wind 10 to 16 mph, with gusts as high as 21 mph.
Saturday
Sunny, with a high near 75. West southwest wind 9 to 14 mph.
Saturday Night
Mostly clear, with a low around 64. Southwest wind 10 to 14 mph.
Sunday
Sunny, with a high near 73. Southwest wind 9 to 15 mph, with gusts as high as 18 mph.
Sunday Night
Mostly clear, with a low around 63. Southwest wind 13 to 15 mph, with gusts as high as 18 mph.
Monday
Sunny, with a high near 68.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
Sunny, with a high near 68.
Tuesday Night
Mostly clear, with a low around 63.
Wednesday
Sunny, with a high near 68.
Wednesday Night
Mostly clear, with a low around 63.
Thursday
Sunny, with a high near 68.
Thursday Night
Mostly clear, with a low around 64.
Friday
Sunny, with a high near 68.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Clayton CA
 37.87°N 121.92°W (Elev. 2818 ft)
1:26 pm PDT Jul 18, 2025
4pm PDT Jul 18, 2025-6pm PDT Jul 25, 2025
 
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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