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

89°F

32°C

Humidity 20%
Wind Speed N 10 MPH
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Heat Index85°F (29°C)
Last update 04 Oct 12:28 PM PDT
Extended Forecast for

3 Miles SW Discovery Bay CA

Heat Advisory October 4, 12:49pm until October 7, 10:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory October 4, 12:49pm until October 7, 10:00pm

    NOW until 10:00pm Wed

    Heat Advisory

  • This Afternoon

    High: 98 °F

    Hot

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 68. Calm wind.

    Low: 68 °F

    Decreasing
    Clouds

  • Monday

    Monday: Sunny and hot, with a high near 100. Calm wind becoming north around 5 mph.

    High: 100 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 68. Calm wind.

    Low: 68 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 101. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 101 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 68.

    Low: 68 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 101.

    High: 101 °F

    Hot

  • Wednesday Night

    Wednesday Night: Clear, with a low around 66.

    Low: 66 °F

    Clear

Detailed Forecast

This Afternoon
Mostly cloudy and hot, with a high near 98. Calm wind.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 68. Calm wind.
Monday
Sunny and hot, with a high near 100. Calm wind becoming north around 5 mph.
Monday Night
Clear, with a low around 68. Calm wind.
Tuesday
Sunny and hot, with a high near 101. Calm wind becoming north northwest around 5 mph in the afternoon.
Tuesday Night
Clear, with a low around 68.
Wednesday
Sunny and hot, with a high near 101.
Wednesday Night
Clear, with a low around 66.
Thursday
Sunny and hot, with a high near 98.
Thursday Night
Clear, with a low around 63.
Friday
Sunny, with a high near 92.
Friday Night
Mostly clear, with a low around 60.
Saturday
Sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Discovery Bay CA
 37.87°N 121.63°W (Elev. 16 ft)
Last Update:
12:41 pm PDT Oct 4, 2026
Forecast Valid:
12pm PDT Oct 4, 2026-6pm PDT Oct 10, 2026
 
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Additional Resources

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