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

Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

76°F

24°C

Humidity 41%
Wind Speed S 17 MPH
Barometer NA
Dewpoint 51°F (11°C)
Visibility NA
Heat Index78°F (26°C)
Last update 16 Jun 04:28 PM PDT
Extended Forecast for

Brentwood CA

  • Tonight

    Tonight: Mostly clear, with a low around 60. West wind 5 to 10 mph becoming light northwest after midnight. Winds could gust as high as 20 mph.

    Low: 60 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 89. Northwest wind 5 to 11 mph, with gusts as high as 21 mph.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 59. West wind 5 to 10 mph, with gusts as high as 21 mph.

    Low: 59 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 86. West wind 5 to 10 mph, with gusts as high as 18 mph.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 59. West wind 6 to 13 mph, with gusts as high as 22 mph.

    Low: 59 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 56.

    Low: 56 °F

    Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 60. West wind 5 to 10 mph becoming light northwest after midnight. Winds could gust as high as 20 mph.
Wednesday
Sunny, with a high near 89. Northwest wind 5 to 11 mph, with gusts as high as 21 mph.
Wednesday Night
Mostly clear, with a low around 59. West wind 5 to 10 mph, with gusts as high as 21 mph.
Thursday
Sunny, with a high near 86. West wind 5 to 10 mph, with gusts as high as 18 mph.
Thursday Night
Mostly clear, with a low around 59. West wind 6 to 13 mph, with gusts as high as 22 mph.
Juneteenth
Sunny, with a high near 83.
Friday Night
Mostly clear, with a low around 57.
Saturday
Sunny, with a high near 82.
Saturday Night
Clear, with a low around 56.
Sunday
Sunny, with a high near 86.
Sunday Night
Clear, with a low around 56.
Monday
Sunny, with a high near 87.
Monday Night
Clear, with a low around 57.
Tuesday
Sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Brentwood CA
 37.93°N 121.7°W (Elev. 75 ft)
Last Update:
1:39 pm PDT Jun 16, 2026
Forecast Valid:
4pm PDT Jun 16, 2026-6pm PDT Jun 23, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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Chance of Precipitation