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

Discovery Bay CA

  • Overnight

    Overnight: A 20 percent chance of rain.  Mostly clear, with a low around 65. Calm wind.

    Low: 65 °F

    Slight Chance
    Rain

  • Thursday

    Thursday: A 20 percent chance of rain.  Increasing clouds and hot, with a high near 97. Calm wind becoming southwest 5 to 8 mph in the morning.

    High: 97 °F

    Slight Chance
    Rain

  • Thursday Night

    Thursday Night: A 20 percent chance of rain.  Mostly cloudy, with a low around 67. Southwest wind 5 to 9 mph, with gusts as high as 21 mph.

    Low: 67 °F

    Slight Chance
    Rain

  • Friday

    Friday: A 20 percent chance of rain.  Cloudy, with a high near 90. Light and variable wind.

    High: 90 °F

    Slight Chance
    Rain

  • Friday Night

    Friday Night: Mostly clear, with a low around 60. Northwest wind 6 to 11 mph becoming light west.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 57.

    Low: 57 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 56.

    Low: 56 °F

    Clear

Detailed Forecast

Overnight
A 20 percent chance of rain. Mostly clear, with a low around 65. Calm wind.
Thursday
A 20 percent chance of rain. Increasing clouds and hot, with a high near 97. Calm wind becoming southwest 5 to 8 mph in the morning.
Thursday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 67. Southwest wind 5 to 9 mph, with gusts as high as 21 mph.
Friday
A 20 percent chance of rain. Cloudy, with a high near 90. Light and variable wind.
Friday Night
Mostly clear, with a low around 60. Northwest wind 6 to 11 mph becoming light west.
Saturday
Sunny, with a high near 89.
Saturday Night
Clear, with a low around 57.
Sunday
Sunny, with a high near 87.
Sunday Night
Clear, with a low around 56.
Monday
Sunny, with a high near 82.
Monday Night
Mostly clear, with a low around 55.
Tuesday
Sunny, with a high near 85.
Tuesday Night
Mostly clear, with a low around 57.
Wednesday
Sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
Discovery Bay CA
 37.9°N 121.61°W (Elev. 3 ft)
2:57 am PDT Aug 27, 2026
5am PDT Aug 27, 2026-6pm PDT Sep 2, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database