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

BLACK DIAMOND (PIBC1)

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

NA

55°F

13°C

Humidity 70%
Wind Speed S 10 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Last update 18 Oct 08:28 PM PDT
Extended Forecast for

Pittsburg CA

  • Tonight

    Tonight: Mostly clear, with a low around 56. West southwest wind 13 to 16 mph, with gusts as high as 28 mph.

    Low: 56 °F

    Mostly Clear

  • Monday

    Monday: Sunny, then becoming mostly cloudy during the afternoon, with a high near 66. West wind 14 to 17 mph, with gusts as high as 30 mph.

    High: 66 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 55. West southwest wind 6 to 11 mph, with gusts as high as 20 mph.

    Low: 55 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 66. Light and variable wind.

    High: 66 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 58. Light west northwest wind. New precipitation amounts of less than a tenth of an inch possible.

    Low: 58 °F

    Chance Rain

  • Wednesday

    Wednesday: A 50 percent chance of rain. Mostly cloudy, with a high near 67. New precipitation amounts of less than a tenth of an inch possible.

    High: 67 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 58.

    Low: 58 °F

    Chance Rain

  • Thursday

    Thursday: A slight chance of rain before 11am. Partly sunny, with a high near 67.

    High: 67 °F

    Slight Chance
    Rain then
    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 56. West southwest wind 13 to 16 mph, with gusts as high as 28 mph.
Monday
Sunny, then becoming mostly cloudy during the afternoon, with a high near 66. West wind 14 to 17 mph, with gusts as high as 30 mph.
Monday Night
Mostly cloudy, with a low around 55. West southwest wind 6 to 11 mph, with gusts as high as 20 mph.
Tuesday
Mostly cloudy, with a high near 66. Light and variable wind.
Tuesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 58. Light west northwest wind. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A 50 percent chance of rain. Mostly cloudy, with a high near 67. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 58.
Thursday
A slight chance of rain before 11am. Partly sunny, with a high near 67.
Thursday Night
Partly cloudy, with a low around 56.
Friday
Sunny, with a high near 69.
Friday Night
Clear, with a low around 55.
Saturday
Sunny, with a high near 69.
Saturday Night
Mostly clear, with a low around 55.
Sunday
A slight chance of rain. Mostly sunny, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Pittsburg CA
 38.04°N 121.87°W (Elev. 3 ft)
Last Update:
8:41 pm PDT Oct 18, 2026
Forecast Valid:
9pm PDT Oct 18, 2026-6pm PDT Oct 25, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation