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

  • Today

    Today: Sunny, with a high near 84. West wind 7 to 11 mph.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 62. West wind 9 to 11 mph.

    Low: 62 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Partly sunny, with a high near 76. West wind around 10 mph.

    High: 76 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 62. West southwest wind 10 to 15 mph, with gusts as high as 21 mph.

    Low: 62 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 78. West southwest wind 13 to 15 mph, with gusts as high as 21 mph.

    High: 78 °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 79.

    High: 79 °F

    Sunny

  • Tuesday Night

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

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 84. West wind 7 to 11 mph.
Tonight
Increasing clouds, with a low around 62. West wind 9 to 11 mph.
Sunday
Partly sunny, with a high near 76. West wind around 10 mph.
Sunday Night
Mostly cloudy, with a low around 62. West southwest wind 10 to 15 mph, with gusts as high as 21 mph.
Monday
Sunny, with a high near 78. West southwest wind 13 to 15 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 61.
Tuesday
Sunny, with a high near 79.
Tuesday Night
Mostly clear, with a low around 61.
Wednesday
Sunny, with a high near 86.
Wednesday Night
Mostly clear, with a low around 65.
Thursday
Sunny, with a high near 89.
Thursday Night
Mostly clear, with a low around 66.
Friday
Sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Antioch CA
 38.03°N 121.81°W (Elev. 3 ft)
Last Update:
9:06 am PDT Sep 19, 2026
Forecast Valid:
10am PDT Sep 19, 2026-6pm PDT Sep 25, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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Chance of Precipitation