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

Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce considerable, potentially life-threatening, flooding across the lower Mississippi River Valley and central Great Lakes region through tonight. Tropical Storm Arthur will move northeastward along the Texas coast today and then move inland over southwestern Louisiana by tonight. An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana. Read More >

Current conditions at

DIABLO GRANDE (DBLC1)

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

NA

90°F

32°C

Humidity 18%
Wind Speed SW 7 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Heat Index86°F (30°C)
Last update 17 Jun 04:00 PM PDT
Extended Forecast for

19 Miles ENE Mount Hamilton CA

  • Tonight

    Tonight: Mostly clear, with a low around 62. East wind around 6 mph becoming light and variable.

    Low: 62 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 82. East northeast wind 3 to 7 mph.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 58. North wind around 6 mph becoming west southwest in the evening.

    Low: 58 °F

    Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 77. Light and variable wind becoming southeast 5 to 7 mph in the afternoon.

    High: 77 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 55. West wind 3 to 8 mph.

    Low: 55 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 57.

    Low: 57 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 61.

    Low: 61 °F

    Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 62. East wind around 6 mph becoming light and variable.
Thursday
Sunny, with a high near 82. East northeast wind 3 to 7 mph.
Thursday Night
Clear, with a low around 58. North wind around 6 mph becoming west southwest in the evening.
Juneteenth
Sunny, with a high near 77. Light and variable wind becoming southeast 5 to 7 mph in the afternoon.
Friday Night
Mostly clear, with a low around 55. West wind 3 to 8 mph.
Saturday
Sunny, with a high near 77.
Saturday Night
Clear, with a low around 57.
Sunday
Sunny, with a high near 81.
Sunday Night
Clear, with a low around 61.
Monday
Sunny, with a high near 84.
Monday Night
Clear, with a low around 63.
Tuesday
Sunny, with a high near 87.
Tuesday Night
Clear, with a low around 66.
Wednesday
Sunny, with a high near 89.
Basemap Options
Click map to change the forecast location
Loading map...
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 Jun 17, 2026
Forecast Valid:
4pm PDT Jun 17, 2026-6pm PDT Jun 24, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation