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

Hazardous Weather Conditions

Current conditions at

DIABLO GRANDE (DBLC1)

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

NA

95°F

35°C

Humidity 15%
Wind Speed E 9 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Heat Index91°F (33°C)
Last update 09 Sep 04:00 PM PDT
Extended Forecast for

19 Miles ENE Mount Hamilton CA

Heat Advisory September 9, 04:51pm until September 10, 10:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 9, 04:51pm until September 10, 10:00pm

    NOW until 10:00pm Thu

    Heat Advisory

  • Tonight

    Low: 81 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 93. Light and variable wind becoming west northwest 8 to 13 mph in the morning. Winds could gust as high as 22 mph.

    High: 93 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 74. West wind 7 to 13 mph, with gusts as high as 22 mph.

    Low: 74 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 87. West southwest wind 6 to 10 mph becoming north in the morning. Winds could gust as high as 18 mph.

    High: 87 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 66. West southwest wind 7 to 11 mph, with gusts as high as 20 mph.

    Low: 66 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 59.

    Low: 59 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 81. North wind 5 to 11 mph becoming west in the evening. Winds could gust as high as 18 mph.
Thursday
Sunny, with a high near 93. Light and variable wind becoming west northwest 8 to 13 mph in the morning. Winds could gust as high as 22 mph.
Thursday Night
Mostly clear, with a low around 74. West wind 7 to 13 mph, with gusts as high as 22 mph.
Friday
Sunny, with a high near 87. West southwest wind 6 to 10 mph becoming north in the morning. Winds could gust as high as 18 mph.
Friday Night
Clear, with a low around 66. West southwest wind 7 to 11 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 77.
Saturday Night
Clear, with a low around 59.
Sunday
Sunny, with a high near 74.
Sunday Night
Mostly clear, with a low around 62.
Monday
Sunny, with a high near 78.
Monday Night
Clear, with a low around 61.
Tuesday
Sunny, with a high near 75.
Tuesday Night
Mostly clear, with a low around 57.
Wednesday
Sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
19 Miles ENE Mount Hamilton CA
 37.42°N 121.32°W (Elev. 2201 ft)
Last Update:
2:00 pm PDT Sep 9, 2026
Forecast Valid:
4pm PDT Sep 9, 2026-6pm PDT Sep 16, 2026
 
Forecast Discussion
 
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Additional Resources

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