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 20%
Wind Speed N 6 MPH
Barometer NA
Dewpoint 44°F (7°C)
Visibility NA
Heat Index86°F (30°C)
Last update 03 Oct 04:28 PM PDT
Extended Forecast for

2 Miles S Antioch CA

Heat Advisory October 3, 09:56pm until October 7, 10:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory October 3, 09:56pm until October 7, 10:00pm

    NOW until 10:00pm Wed

    Heat Advisory

  • Tonight

    Low: 72 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy and hot, with a high near 96. Light and variable wind.

    High: 96 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 72. Light west wind.

    Low: 72 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 99. Calm wind becoming north around 5 mph in the afternoon.

    High: 99 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 72. West northwest wind around 6 mph becoming calm in the evening.

    Low: 72 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 100.

    High: 100 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 72.

    Low: 72 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 100.

    High: 100 °F

    Hot

Detailed Forecast

Tonight
Increasing clouds, with a low around 72. Calm wind.
Sunday
Mostly cloudy and hot, with a high near 96. Light and variable wind.
Sunday Night
Mostly clear, with a low around 72. Light west wind.
Monday
Sunny and hot, with a high near 99. Calm wind becoming north around 5 mph in the afternoon.
Monday Night
Clear, with a low around 72. West northwest wind around 6 mph becoming calm in the evening.
Tuesday
Sunny and hot, with a high near 100.
Tuesday Night
Clear, with a low around 72.
Wednesday
Sunny and hot, with a high near 100.
Wednesday Night
Clear, with a low around 69.
Thursday
Sunny and hot, with a high near 97.
Thursday Night
Clear, with a low around 67.
Friday
Sunny, with a high near 88.
Friday Night
Mostly clear, with a low around 62.
Saturday
Sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Antioch CA
 37.98°N 121.8°W (Elev. 157 ft)
Last Update:
7:52 pm PDT Oct 3, 2026
Forecast Valid:
9pm PDT Oct 3, 2026-6pm PDT Oct 10, 2026
 
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Additional Resources

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