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

55°F

13°C

Humidity 90%
Wind Speed S 15 MPH
Barometer NA
Dewpoint 52°F (11°C)
Visibility NA
Last update 19 Jun 12:00 AM PDT
Extended Forecast for

25 Miles ESE Mount Hamilton CA

  • Overnight

    Overnight: Mostly clear, with a low around 59. West southwest wind 8 to 13 mph, with gusts as high as 21 mph.

    Low: 59 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 80. Southwest wind 7 to 10 mph, with gusts as high as 18 mph.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 57. West southwest wind 7 to 15 mph, with gusts as high as 24 mph.

    Low: 57 °F

    Mostly Clear

  • Saturday

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

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 57. West wind 7 to 10 mph.

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 87.

    High: 87 °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: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 59. West southwest wind 8 to 13 mph, with gusts as high as 21 mph.
Juneteenth
Sunny, with a high near 80. Southwest wind 7 to 10 mph, with gusts as high as 18 mph.
Friday Night
Mostly clear, with a low around 57. West southwest wind 7 to 15 mph, with gusts as high as 24 mph.
Saturday
Sunny, with a high near 82. Light and variable wind becoming west southwest 5 to 7 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 57. West wind 7 to 10 mph.
Sunday
Sunny, with a high near 87.
Sunday Night
Clear, with a low around 61.
Monday
Sunny, with a high near 90.
Monday Night
Mostly clear, with a low around 63.
Tuesday
Sunny, with a high near 93.
Tuesday Night
Mostly clear, with a low around 65.
Wednesday
Sunny, with a high near 94.
Wednesday Night
Clear, with a low around 66.
Thursday
Sunny, with a high near 93.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
25 Miles ESE Mount Hamilton CA
 37.26°N 121.19°W (Elev. 1178 ft)
Last Update:
11:31 pm PDT Jun 18, 2026
Forecast Valid:
12am PDT Jun 19, 2026-6pm PDT Jun 25, 2026
 
Forecast Discussion
 
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