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

88°F

31°C

Humidity 22%
Wind Speed N 8 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Heat Index85°F (29°C)
Last update 03 Oct 01:28 PM PDT
Extended Forecast for

Discovery Bay CA

Heat Advisory October 3, 02:15pm until October 7, 10:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory October 3, 02:15pm until October 7, 10:00pm

    NOW until 10:00pm Wed

    Heat Advisory

  • This Afternoon

    High: 100 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 68. Calm wind.

    Low: 68 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly cloudy and hot, with a high near 97. Light and variable wind.

    High: 97 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 67. Calm wind.

    Low: 67 °F

    Mostly Clear

  • Monday

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

    High: 101 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 69.

    Low: 69 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 102.

    High: 102 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 68.

    Low: 68 °F

    Clear

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 100. Light north wind.
Tonight
Mostly clear, with a low around 68. Calm wind.
Sunday
Mostly cloudy and hot, with a high near 97. Light and variable wind.
Sunday Night
Mostly clear, with a low around 67. Calm wind.
Monday
Sunny and hot, with a high near 101. Calm wind becoming north northwest around 5 mph in the afternoon.
Monday Night
Clear, with a low around 69.
Tuesday
Sunny and hot, with a high near 102.
Tuesday Night
Clear, with a low around 68.
Wednesday
Sunny and hot, with a high near 102.
Wednesday Night
Clear, with a low around 66.
Thursday
Sunny and hot, with a high near 100.
Thursday Night
Clear, with a low around 64.
Friday
Sunny, with a high near 91.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Discovery Bay CA
 37.9°N 121.61°W (Elev. 3 ft)
Last Update:
1:30 pm PDT Oct 3, 2026
Forecast Valid:
2pm PDT Oct 3, 2026-6pm PDT Oct 9, 2026
 
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Additional Resources

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Chance of Precipitation