Heat Persists in the South Central U.S. and Southwest; Heavy rains in the Desert Southwest and Central Plains

Sweltering heat remains across the South-Central Plains, Lower/Middle Mississippi Valley, and the Southwest this week with limited nighttime relief. Thunderstorms will bring heavy rainfall leading to localized flash flooding in portions of the Desert Southwest and central Plains. Isolated strong to severe thunderstorms are possible across portions of the central Plains into the Northeast. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

80°F

27°C

Humidity 27%
Wind Speed NNE 2 MPH
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Heat Index79°F (26°C)
Last update 08 Sep 10:28 PM PDT
Extended Forecast for

4 Miles ENE Clayton CA

Heat Advisory September 8, 11:01pm until September 10, 10:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 8, 11:01pm until September 10, 10:00pm

    NOW until 10:00pm Thu

    Heat Advisory

  • Tonight

    Low: 70 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 95. North wind 3 to 7 mph.

    High: 95 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 73. West southwest wind 8 to 10 mph.

    Low: 73 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 91. West southwest wind 8 to 15 mph, with gusts as high as 25 mph.

    High: 91 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 65. Southwest wind 15 to 18 mph, with gusts as high as 29 mph.

    Low: 65 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 74. Breezy.

    High: 74 °F

    Sunny and
    Breezy

Detailed Forecast

Tonight
Partly cloudy, with a low around 70. West southwest wind 5 to 7 mph.
Wednesday
Sunny, with a high near 95. North wind 3 to 7 mph.
Wednesday Night
Mostly clear, with a low around 73. West southwest wind 8 to 10 mph.
Thursday
Sunny, with a high near 91. West southwest wind 8 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Mostly clear, with a low around 65. Southwest wind 15 to 18 mph, with gusts as high as 29 mph.
Friday
Sunny, with a high near 81.
Friday Night
Mostly clear, with a low around 59.
Saturday
Sunny, with a high near 74. Breezy.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Sunny, with a high near 78.
Sunday Night
Clear, with a low around 56.
Monday
Sunny, with a high near 78.
Monday Night
Mostly clear, with a low around 56.
Tuesday
Sunny, with a high near 74.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE Clayton CA
 37.95°N 121.88°W (Elev. 1358 ft)
1:25 pm PDT Sep 8, 2026
11pm PDT Sep 8, 2026-6pm PDT Sep 15, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database