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

Hot Temperatures in the Northwest U.S.; Tropical Rainfall Potential in the Southwest U.S.

Hot to extremely hot temperatures are in place again Thursday across the interior northwest U.S. A combination of monsoonal moisture and tropical moisture ahead of tropical cyclone Lorena will bring a marginal to slight risk of excessive rainfall across the southwest U.S. through Saturday which may bring areas of flooding. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

62°F

17°C

Humidity 61%
Wind Speed SSE 10 MPH
Barometer NA
Dewpoint 48°F (9°C)
Visibility NA
Last update 04 Sep 03:28 AM PDT
Extended Forecast for

Pittsburg CA

  • Today

    Today: Sunny, with a high near 78. West wind around 15 mph, with gusts as high as 24 mph.

    High: 78 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 62. West southwest wind around 14 mph, with gusts as high as 24 mph.

    Low: 62 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 76. West southwest wind around 14 mph, with gusts as high as 23 mph.

    High: 76 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 62. Southwest wind around 14 mph, with gusts as high as 23 mph.

    Low: 62 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 76. West southwest wind around 14 mph, with gusts as high as 23 mph.

    High: 76 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Monday

    Monday: A slight chance of rain. Mostly sunny, with a high near 75.

    High: 75 °F

    Slight Chance
    Rain

Detailed Forecast

Today
Sunny, with a high near 78. West wind around 15 mph, with gusts as high as 24 mph.
Tonight
Mostly clear, with a low around 62. West southwest wind around 14 mph, with gusts as high as 24 mph.
Friday
Sunny, with a high near 76. West southwest wind around 14 mph, with gusts as high as 23 mph.
Friday Night
Mostly clear, with a low around 62. Southwest wind around 14 mph, with gusts as high as 23 mph.
Saturday
Sunny, with a high near 76. West southwest wind around 14 mph, with gusts as high as 23 mph.
Saturday Night
Mostly clear, with a low around 64.
Sunday
Sunny, with a high near 77.
Sunday Night
Mostly clear, with a low around 65.
Monday
A slight chance of rain. Mostly sunny, with a high near 75.
Monday Night
Mostly clear, with a low around 64.
Tuesday
A slight chance of rain. Mostly sunny, with a high near 73.
Tuesday Night
Mostly clear, with a low around 62.
Wednesday
A slight chance of rain. Mostly sunny, with a high near 73.
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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:
2:39 am PDT Sep 4, 2025
Forecast Valid:
4am PDT Sep 4, 2025-6pm PDT Sep 10, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation