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

Extreme Heat and Excessive Rainfall This Week

A significant heat wave is underway for the Intermountain West, Northern Plains, and Upper Great Lakes, peaking in intensity through midweek and lingering across parts of the Northern Plains and Midwest until this weekend. In southwest Texas, excessive rainfall may bring a risk for potentially life-threatening flash and arroyo flooding through Thursday. Read More >

Hazardous Weather Conditions

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

84°F

29°C

Humidity 21%
Wind Speed S 15 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Heat Index81°F (27°C)
Last update 13 Jul 05:28 PM PDT
Extended Forecast for

Antioch CA

Heat Advisory July 14, 10:00am until July 14, 10:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: Partly cloudy, with a low around 69. West wind 5 to 9 mph.

    Low: 69 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny and hot, with a high near 96. Light west northwest wind becoming west 9 to 14 mph in the morning. Winds could gust as high as 23 mph.

    High: 96 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 69. West southwest wind 9 to 13 mph, with gusts as high as 23 mph.

    Low: 69 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 96. West wind 8 to 14 mph, with gusts as high as 23 mph.

    High: 96 °F

    Hot

  • Wednesday Night

    Wednesday Night: Clear, with a low around 65. West southwest wind 10 to 15 mph, with gusts as high as 26 mph.

    Low: 65 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 69. West wind 5 to 9 mph.
Tuesday
Sunny and hot, with a high near 96. Light west northwest wind becoming west 9 to 14 mph in the morning. Winds could gust as high as 23 mph.
Tuesday Night
Clear, with a low around 69. West southwest wind 9 to 13 mph, with gusts as high as 23 mph.
Wednesday
Sunny and hot, with a high near 96. West wind 8 to 14 mph, with gusts as high as 23 mph.
Wednesday Night
Clear, with a low around 65. West southwest wind 10 to 15 mph, with gusts as high as 26 mph.
Thursday
Sunny, with a high near 88.
Thursday Night
Mostly clear, with a low around 61.
Friday
Sunny, with a high near 84.
Friday Night
Mostly clear, with a low around 60.
Saturday
Sunny, with a high near 84.
Saturday Night
Mostly clear, with a low around 62.
Sunday
Sunny, with a high near 86.
Sunday Night
Partly cloudy, with a low around 62.
Monday
Mostly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Antioch CA
 38°N 121.81°W (Elev. 36 ft)
Last Update:
1:26 pm PDT Jul 13, 2026
Forecast Valid:
6pm PDT Jul 13, 2026-6pm PDT Jul 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

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Chance of Precipitation