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

Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

Lat: 37.95°NLon: 121.88444°WElev: 1600.0ft.

NA

N/A

Humidity 25%
Wind Speed SE 9 MPH
Barometer NA
Dewpoint N/A
Visibility NA
Last update 10 Aug 02:28 AM PDT
Extended Forecast for

4 Miles SSE Clayton CA

  • Tonight

    Tonight: Mostly clear, with a low around 69. West southwest wind 6 to 11 mph.

    Low: 69 °F

    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 88. Calm wind becoming west southwest 5 to 7 mph in the afternoon.

    High: 88 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Cloudy during the early evening, then gradual clearing, with a low around 70. Southwest wind 8 to 10 mph.

    Low: 70 °F

    Gradual
    Clearing

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 83. West southwest wind 7 to 10 mph, with gusts as high as 18 mph.

    High: 83 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Mostly clear, with a low around 66. West southwest wind 9 to 11 mph, with gusts as high as 21 mph.

    Low: 66 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 69. West southwest wind 6 to 11 mph.
Sunday
Increasing clouds, with a high near 88. Calm wind becoming west southwest 5 to 7 mph in the afternoon.
Sunday Night
Cloudy during the early evening, then gradual clearing, with a low around 70. Southwest wind 8 to 10 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 83. West southwest wind 7 to 10 mph, with gusts as high as 18 mph.
Monday Night
Mostly clear, with a low around 66. West southwest wind 9 to 11 mph, with gusts as high as 21 mph.
Tuesday
Mostly sunny, with a high near 82.
Tuesday Night
Mostly clear, with a low around 66.
Wednesday
Sunny, with a high near 85.
Wednesday Night
Mostly clear, with a low around 68.
Thursday
Sunny, with a high near 87.
Thursday Night
Mostly clear, with a low around 68.
Friday
Sunny, with a high near 84.
Friday Night
Mostly clear, with a low around 66.
Saturday
Sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Clayton CA
 37.9°N 121.9°W (Elev. 1814 ft)
Last Update:
3:12 pm PDT Aug 22, 2026
Forecast Valid:
5pm PDT Aug 22, 2026-6pm PDT Aug 29, 2026
 
Forecast Discussion
 
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Additional Resources

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