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

Heavy to Excessive Rainfall and Flooding Threats in the Central and Eastern U.S.; Heat and Fire Weather Concerns in the West

Thunderstorms producing excessive rainfall and potential flooding concerns will continue through tonight from the Southern Plains to the East Coast. Areas of greatest concern for flooding are over central Texas and the Mid-Atlantic. Heat will continue to build across the West through Tuesday. Heat Advisories and Extreme Heat Warnings are in effect. Fire Weather concerns continue through Monday. Read More >

Current conditions at

Mount Diablo Summit Museum and Trailhead Rooftop (SJS02)

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

NA

76°F

24°C

Humidity 25%
Wind Speed W 4 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Heat Index77°F (25°C)
Last update 14 Jul 01:50 AM PDT
Extended Forecast for

4 Miles SSE Clayton CA

  • Overnight

    Overnight: Clear, with a steady temperature around 69. Southwest wind around 9 mph, with gusts as high as 18 mph.

    Low: 69 °F

    Clear

  • Monday

    Monday: Areas of smoke before 9am. Sunny, with a high near 80. Southwest wind 7 to 10 mph, with gusts as high as 21 mph.

    High: 80 °F

    Areas Smoke
    then Sunny

  • Monday Night

    Monday Night: Clear, with a low around 64. Southwest wind around 10 mph, with gusts as high as 21 mph.

    Low: 64 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 74. Southwest wind 9 to 11 mph, with gusts as high as 21 mph.

    High: 74 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 62. West southwest wind 11 to 13 mph, with gusts as high as 24 mph.

    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

  • Thursday

    Thursday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

  • Thursday Night

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

    Low: 62 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a steady temperature around 69. Southwest wind around 9 mph, with gusts as high as 18 mph.
Monday
Areas of smoke before 9am. Sunny, with a high near 80. Southwest wind 7 to 10 mph, with gusts as high as 21 mph.
Monday Night
Clear, with a low around 64. Southwest wind around 10 mph, with gusts as high as 21 mph.
Tuesday
Sunny, with a high near 74. Southwest wind 9 to 11 mph, with gusts as high as 21 mph.
Tuesday Night
Mostly clear, with a low around 62. West southwest wind 11 to 13 mph, with gusts as high as 24 mph.
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 72.
Friday Night
Mostly clear, with a low around 61.
Saturday
Sunny, with a high near 75.
Saturday Night
Mostly clear, with a low around 62.
Sunday
Sunny, with a high near 76.
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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 am PDT Jul 14, 2025
Forecast Valid:
2am PDT Jul 14, 2025-6pm PDT Jul 20, 2025
 
Forecast Discussion
 
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Additional Resources

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