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

Remnants of Arthur and Heavy Rainfall Across the South; Fire Weather Threat in the West

Life-threatening, potentially catastrophic flash flooding expected along the central Gulf Coast as the remnants of Arthur track across the area. Isolated brief tornadoes and damaging gusts remain possible overnight in the Southeast. Isolated to scattered dry thunderstorms may cause lightning-ignited fires and erratic behavior due to gusty winds across parts of the West Friday. Read More >

Current conditions at

DIABLO GRANDE (DBLC1)

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

NA

56°F

13°C

Humidity 85%
Wind Speed S 12 MPH
Barometer NA
Dewpoint 52°F (11°C)
Visibility NA
Last update 18 Jun 11:00 PM PDT
Extended Forecast for

23 Miles E Mount Hamilton CA

  • Tonight

    Tonight: Mostly clear, with a low around 58. Southwest wind 5 to 7 mph.

    Low: 58 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 80. South southwest wind 5 to 8 mph.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 56. West southwest wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.

    Low: 56 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 82. Light and variable wind becoming east northeast 5 to 7 mph in the afternoon.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 57. West wind 3 to 8 mph.

    Low: 57 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 61.

    Low: 61 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 64.

    Low: 64 °F

    Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 58. Southwest wind 5 to 7 mph.
Juneteenth
Sunny, with a high near 80. South southwest wind 5 to 8 mph.
Friday Night
Mostly clear, with a low around 56. West southwest wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.
Saturday
Sunny, with a high near 82. Light and variable wind becoming east northeast 5 to 7 mph in the afternoon.
Saturday Night
Clear, with a low around 57. West wind 3 to 8 mph.
Sunday
Sunny, with a high near 86.
Sunday Night
Clear, with a low around 61.
Monday
Sunny, with a high near 90.
Monday Night
Clear, with a low around 64.
Tuesday
Sunny, with a high near 93.
Tuesday Night
Clear, with a low around 66.
Wednesday
Sunny, with a high near 93.
Wednesday Night
Clear, with a low around 66.
Thursday
Sunny, with a high near 92.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
23 Miles E Mount Hamilton CA
 37.32°N 121.24°W (Elev. 1316 ft)
Last Update:
8:46 pm PDT Jun 18, 2026
Forecast Valid:
11pm PDT Jun 18, 2026-6pm PDT Jun 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation