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

Hazardous Weather Conditions

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

90°F

32°C

Humidity 21%
Wind Speed SW 6 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Heat Index86°F (30°C)
Last update 04 Oct 05:28 PM PDT
Extended Forecast for

Clayton CA

Heat Advisory October 5, 09:21am until October 7, 10:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory October 5, 09:21am until October 7, 10:00pm

    NOW until 10:00pm Wed

    Heat Advisory

  • Today

    High: 102 °F

    Hot

  • Tonight

    Tonight: Clear, with a low around 66. Calm wind.

    Low: 66 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 102. Calm wind becoming west northwest around 6 mph in the afternoon.

    High: 102 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 65. West wind 5 to 7 mph becoming calm in the evening.

    Low: 65 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 101. Calm wind becoming west around 6 mph in the afternoon.

    High: 101 °F

    Hot

  • Wednesday Night

    Wednesday Night: Clear, with a low around 61.

    Low: 61 °F

    Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 99.

    High: 99 °F

    Hot

  • Thursday Night

    Thursday Night: Clear, with a low around 61.

    Low: 61 °F

    Clear

Detailed Forecast

Today
Sunny and hot, with a high near 102. Calm wind becoming north around 5 mph in the afternoon.
Tonight
Clear, with a low around 66. Calm wind.
Tuesday
Sunny and hot, with a high near 102. Calm wind becoming west northwest around 6 mph in the afternoon.
Tuesday Night
Clear, with a low around 65. West wind 5 to 7 mph becoming calm in the evening.
Wednesday
Sunny and hot, with a high near 101. Calm wind becoming west around 6 mph in the afternoon.
Wednesday Night
Clear, with a low around 61.
Thursday
Sunny and hot, with a high near 99.
Thursday Night
Clear, with a low around 61.
Friday
Sunny, with a high near 94.
Friday Night
Clear, with a low around 60.
Saturday
Sunny, with a high near 83.
Saturday Night
Mostly clear, with a low around 54.
Sunday
Sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Clayton CA
 37.96°N 121.97°W (Elev. 249 ft)
Last Update:
1:26 am PDT Oct 5, 2026
Forecast Valid:
9am PDT Oct 5, 2026-6pm PDT Oct 11, 2026
 
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Additional Resources

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