Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

DIABLO GRANDE (DBLC1)

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

NA

92°F

33°C

Humidity 26%
Wind Speed ENE 8 MPH
Barometer NA
Dewpoint 52°F (11°C)
Visibility NA
Heat Index89°F (32°C)
Last update 19 Aug 06:00 PM PDT
Extended Forecast for

19 Miles ENE Mount Hamilton CA

  • Tonight

    Tonight: Mostly clear, with a low around 73. North wind around 6 mph becoming light and variable  in the evening.

    Low: 73 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 88. Light and variable wind becoming northeast 5 to 8 mph in the morning.

    High: 88 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 72. North wind 5 to 7 mph becoming calm  in the evening.

    Low: 72 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 86. Calm wind becoming north 5 to 9 mph in the afternoon.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 69. West wind 5 to 9 mph.

    Low: 69 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 73. North wind around 6 mph becoming light and variable in the evening.
Thursday
Mostly sunny, with a high near 88. Light and variable wind becoming northeast 5 to 8 mph in the morning.
Thursday Night
Mostly clear, with a low around 72. North wind 5 to 7 mph becoming calm in the evening.
Friday
Sunny, with a high near 86. Calm wind becoming north 5 to 9 mph in the afternoon.
Friday Night
Mostly clear, with a low around 69. West wind 5 to 9 mph.
Saturday
Sunny, with a high near 85.
Saturday Night
Mostly clear, with a low around 69.
Sunday
Sunny, with a high near 86.
Sunday Night
Mostly clear, with a low around 69.
Monday
Sunny, with a high near 85.
Monday Night
Mostly clear, with a low around 67.
Tuesday
Mostly sunny, with a high near 84.
Tuesday Night
Mostly clear, with a low around 67.
Wednesday
Sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
19 Miles ENE Mount Hamilton CA
 37.42°N 121.32°W (Elev. 2201 ft)
2:00 pm PDT Aug 19, 2026
6pm PDT Aug 19, 2026-6pm PDT Aug 26, 2026
 
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Additional Resources

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