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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. 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 SSW 15 MPH
Barometer NA
Dewpoint 51°F (11°C)
Visibility NA
Heat Index78°F (26°C)
Last update 18 Sep 05:28 PM PDT
Extended Forecast for

Antioch CA

  • Tonight

    Tonight: Clear, with a low around 61. West wind 5 to 8 mph.

    Low: 61 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 89. Light west wind increasing to 5 to 10 mph in the morning.

    High: 89 °F

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 62. West southwest wind 5 to 9 mph, with gusts as high as 18 mph.

    Low: 62 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Partly sunny, with a high near 82. West southwest wind 5 to 9 mph.

    High: 82 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 61. West southwest wind 7 to 10 mph.

    Low: 61 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Monday Night

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

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 62.

    Low: 62 °F

    Clear

Detailed Forecast

Tonight
Clear, with a low around 61. West wind 5 to 8 mph.
Saturday
Sunny, with a high near 89. Light west wind increasing to 5 to 10 mph in the morning.
Saturday Night
Increasing clouds, with a low around 62. West southwest wind 5 to 9 mph, with gusts as high as 18 mph.
Sunday
Partly sunny, with a high near 82. West southwest wind 5 to 9 mph.
Sunday Night
Mostly cloudy, with a low around 61. West southwest wind 7 to 10 mph.
Monday
Sunny, with a high near 84.
Monday Night
Mostly clear, with a low around 61.
Tuesday
Sunny, with a high near 87.
Tuesday Night
Clear, with a low around 62.
Wednesday
Sunny, with a high near 95.
Wednesday Night
Mostly clear, with a low around 67.
Thursday
Sunny, with a high near 95.
Thursday Night
Mostly clear, with a low around 67.
Friday
Sunny, with a high near 89.
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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 Sep 18, 2026
Forecast Valid:
10pm PDT Sep 18, 2026-6pm PDT Sep 25, 2026
 
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Additional Resources

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Chance of Precipitation