Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

88°F

31°C

Humidity 25%
Wind Speed SSW 2 MPH
Barometer NA
Dewpoint 48°F (9°C)
Visibility NA
Heat Index85°F (29°C)
Last update 02 Oct 05:28 PM PDT
Extended Forecast for

Pittsburg CA

Heat Advisory October 3, 11:00am until October 5, 10:00pm
Click here for hazard details and duration
Heat Advisory
  • Today

    Today: Sunny and hot, with a high near 99. Calm wind becoming northeast around 6 mph.

    High: 99 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 73. West southwest wind around 6 mph.

    Low: 73 °F

    Mostly Clear

  • Sunday

    Sunday: Cloudy, then gradually becoming mostly sunny and hot, with a high near 98. Calm wind becoming north northeast around 5 mph.

    High: 98 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 71. West southwest wind around 6 mph.

    Low: 71 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 99. West southwest wind around 6 mph becoming north in the morning.

    High: 99 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 71.

    Low: 71 °F

    Clear

  • Tuesday

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

    High: 99 °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 99.

    High: 99 °F

    Hot

Detailed Forecast

Today
Sunny and hot, with a high near 99. Calm wind becoming northeast around 6 mph.
Tonight
Mostly clear, with a low around 73. West southwest wind around 6 mph.
Sunday
Cloudy, then gradually becoming mostly sunny and hot, with a high near 98. Calm wind becoming north northeast around 5 mph.
Sunday Night
Mostly clear, with a low around 71. West southwest wind around 6 mph.
Monday
Sunny and hot, with a high near 99. West southwest wind around 6 mph becoming north in the morning.
Monday Night
Clear, with a low around 71.
Tuesday
Sunny and hot, with a high near 99.
Tuesday Night
Clear, with a low around 72.
Wednesday
Sunny and hot, with a high near 99.
Wednesday Night
Clear, with a low around 70.
Thursday
Sunny and hot, with a high near 96.
Thursday Night
Mostly clear, with a low around 67.
Friday
Sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
Pittsburg CA
 38.01°N 121.9°W (Elev. 85 ft)
2:11 am PDT Oct 3, 2026
5am PDT Oct 3, 2026-6pm PDT Oct 9, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database