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

78°F

26°C

Humidity 27%
Wind Speed SW 0 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Heat Index78°F (26°C)
Last update 09 Sep 01:28 AM PDT
Extended Forecast for

Discovery Bay CA

Heat Advisory September 9, 02:21am until September 10, 10:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 9, 02:21am until September 10, 10:00pm

    NOW until 10:00pm Thu

    Heat Advisory

  • Overnight

    Low: 69 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny and hot, with a high near 102. Northwest wind 5 to 7 mph.

    High: 102 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 73. Light west southwest wind.

    Low: 73 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny and hot, with a high near 100. Light west southwest wind becoming west 6 to 11 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 100 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 65. West southwest wind 7 to 11 mph, with gusts as high as 21 mph.

    Low: 65 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 60.

    Low: 60 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

Detailed Forecast

Overnight
Partly cloudy, with a low around 69. Light west northwest wind.
Wednesday
Mostly sunny and hot, with a high near 102. Northwest wind 5 to 7 mph.
Wednesday Night
Mostly clear, with a low around 73. Light west southwest wind.
Thursday
Mostly sunny and hot, with a high near 100. Light west southwest wind becoming west 6 to 11 mph in the afternoon. Winds could gust as high as 21 mph.
Thursday Night
Mostly clear, with a low around 65. West southwest wind 7 to 11 mph, with gusts as high as 21 mph.
Friday
Sunny, with a high near 92.
Friday Night
Clear, with a low around 60.
Saturday
Sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Sunny, with a high near 86.
Sunday Night
Clear, with a low around 57.
Monday
Sunny, with a high near 89.
Monday Night
Clear, with a low around 57.
Tuesday
Sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Discovery Bay CA
 37.88°N 121.58°W (Elev. -2 ft)
1:25 am PDT Sep 9, 2026
2am PDT Sep 9, 2026-6pm PDT Sep 15, 2026
 
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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