Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

N/A

Humidity 25%
Wind Speed SE 9 MPH
Barometer NA
Dewpoint N/A
Visibility NA
Last update 10 Aug 02:28 AM PDT
Extended Forecast for

Antioch CA

  • Tonight

    Tonight: A 20 percent chance of showers after 4am.  Mostly cloudy, with a low around 69. West wind 7 to 11 mph, with gusts as high as 20 mph.

    Low: 69 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers.  Cloudy, then gradually becoming mostly sunny, with a high near 85. Light west southwest wind becoming west 8 to 13 mph in the morning.

    High: 85 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 62. West wind 5 to 13 mph, with gusts as high as 22 mph.

    Low: 62 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 84. West southwest wind 7 to 14 mph, with gusts as high as 23 mph.

    High: 84 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 59. Southwest wind 7 to 14 mph, with gusts as high as 24 mph.

    Low: 59 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 59.

    Low: 59 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

Detailed Forecast

Tonight
A 20 percent chance of showers after 4am. Mostly cloudy, with a low around 69. West wind 7 to 11 mph, with gusts as high as 20 mph.
Friday
A 20 percent chance of showers. Cloudy, then gradually becoming mostly sunny, with a high near 85. Light west southwest wind becoming west 8 to 13 mph in the morning.
Friday Night
Mostly clear, with a low around 62. West wind 5 to 13 mph, with gusts as high as 22 mph.
Saturday
Sunny, with a high near 84. West southwest wind 7 to 14 mph, with gusts as high as 23 mph.
Saturday Night
Clear, with a low around 59. Southwest wind 7 to 14 mph, with gusts as high as 24 mph.
Sunday
Sunny, with a high near 84.
Sunday Night
Clear, with a low around 59.
Monday
Sunny, with a high near 79.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Sunny, with a high near 80.
Tuesday Night
Mostly clear, with a low around 59.
Wednesday
Sunny, with a high near 83.
Wednesday Night
A slight chance of showers. Mostly clear, with a low around 61.
Thursday
A slight chance of showers. Mostly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Antioch CA
 38°N 121.81°W (Elev. 36 ft)
1:42 pm PDT Aug 27, 2026
3pm PDT Aug 27, 2026-6pm PDT Sep 3, 2026
 
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Additional Resources

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