Extreme Heat in the Southwest; Severe Weather in the Northern Plains; Heavy Rain in the East

Extreme heat continues across the Southwest as temperatures may top 120 degrees. The heat may expand across the West and south-central U.S. into the middle of the month. Severe thunderstorms capable of severe wind gusts and large hail will be the primary hazards today across the northern Plains into the upper Midwest. Rainfall could be locally heavy across the Eastern U.S. today. Read More >

Hazardous Weather Conditions

Current conditions at

DIABLO GRANDE (DBLC1)

Lat: 37.32927°NLon: 121.29538°WElev: 1861.0ft.

NA

86°F

30°C

Humidity 20%
Wind Speed S 4 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Heat Index83°F (28°C)
Last update 03 Aug 09:00 PM PDT
Extended Forecast for

14 Miles NE Mount Hamilton CA

Heat Advisory August 3, 09:29pm until August 3, 10:00pm
Click here for hazard details and duration
...
  •  
    Heat Advisory August 3, 09:29pm until August 3, 10:00pm

    NOW until 10:00pm Mon

    Heat Advisory

  • Tonight

    Low: 61 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93. Light and variable wind becoming east northeast 5 to 7 mph in the morning.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 66. North wind around 5 mph becoming light and variable.

    Low: 66 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 91. Light and variable wind becoming north 5 to 7 mph in the afternoon.

    High: 91 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 66. Northwest wind around 5 mph becoming light and variable  in the evening.

    Low: 66 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 68.

    Low: 68 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

Detailed Forecast

Tonight
Clear, with a low around 61. South southwest wind around 5 mph.
Tuesday
Sunny, with a high near 93. Light and variable wind becoming east northeast 5 to 7 mph in the morning.
Tuesday Night
Clear, with a low around 66. North wind around 5 mph becoming light and variable.
Wednesday
Sunny, with a high near 91. Light and variable wind becoming north 5 to 7 mph in the afternoon.
Wednesday Night
Clear, with a low around 66. Northwest wind around 5 mph becoming light and variable in the evening.
Thursday
Sunny, with a high near 92.
Thursday Night
Clear, with a low around 68.
Friday
Sunny, with a high near 94.
Friday Night
Clear, with a low around 70.
Saturday
Sunny, with a high near 95.
Saturday Night
Clear, with a low around 69.
Sunday
Sunny, with a high near 92.
Sunday Night
Mostly clear, with a low around 62.
Monday
Sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
14 Miles NE Mount Hamilton CA
 37.49°N 121.48°W (Elev. 2799 ft)
2:00 pm PDT Aug 3, 2026
9pm PDT Aug 3, 2026-6pm PDT Aug 10, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database