National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Risks of Severe Thunderstorms and Excessive Rainfall; Fire Weather Concerns and Record Warmth

Severe thunderstorms and flash flooding risks increase across the center of the nation today. Meanwhile, ongoing thunderstorms and flash flooding will linger along the Gulf Coast states through the evening. The Great Basin and Intermountain West, warm temperatures and dry fuels with dry lightning may enhance fire weather potential. In addition, across interior Alaska, Red Flag Warning are posted. Read More >

Current conditions at

DIABLO GRANDE (DBLC1)

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

NA

80°F

27°C

Humidity 30%
Wind Speed SSW 6 MPH
Barometer NA
Dewpoint 46°F (8°C)
Visibility NA
Heat Index79°F (26°C)
Last update 20 Jun 02:00 PM PDT
Extended Forecast for

13 Miles ENE Mount Hamilton CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 77. East wind around 6 mph.

    High: 77 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 52. West southwest wind 3 to 6 mph.

    Low: 52 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 83. Calm wind becoming east northeast 5 to 7 mph in the afternoon.

    High: 83 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 56. West wind around 6 mph.

    Low: 56 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 87. Calm wind becoming north around 6 mph in the afternoon.

    High: 87 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 59.

    Low: 59 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 60.

    Low: 60 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 77. East wind around 6 mph.
Tonight
Clear, with a low around 52. West southwest wind 3 to 6 mph.
Sunday
Sunny, with a high near 83. Calm wind becoming east northeast 5 to 7 mph in the afternoon.
Sunday Night
Clear, with a low around 56. West wind around 6 mph.
Monday
Sunny, with a high near 87. Calm wind becoming north around 6 mph in the afternoon.
Monday Night
Clear, with a low around 59.
Tuesday
Sunny, with a high near 89.
Tuesday Night
Clear, with a low around 60.
Wednesday
Sunny, with a high near 90.
Wednesday Night
Clear, with a low around 60.
Thursday
Sunny, with a high near 89.
Thursday Night
Clear, with a low around 57.
Friday
Sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
13 Miles ENE Mount Hamilton CA
 37.43°N 121.43°W (Elev. 2398 ft)
Last Update:
2:00 pm PDT Jun 20, 2026
Forecast Valid:
2pm PDT Jun 20, 2026-6pm PDT Jun 26, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation