Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

DIABLO GRANDE (DBLC1)

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

NA

78°F

26°C

Humidity 20%
Wind Speed WNW 5 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Heat Index77°F (25°C)
Last update 22 Aug 11:00 PM PDT
Extended Forecast for

13 Miles E Mount Hamilton CA

  • Tonight

    Tonight: Mostly clear, with a low around 63. West wind around 5 mph becoming calm  after midnight.

    Low: 63 °F

    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 88. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 88 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 64. Light west southwest wind.

    Low: 64 °F

    Increasing
    Clouds

  • Monday

    Monday: Cloudy through mid morning, then gradual clearing, with a high near 86. West southwest wind 3 to 7 mph.

    High: 86 °F

    Gradual
    Clearing

  • Monday Night

    Monday Night: Mostly clear, with a low around 61. West southwest wind around 5 mph becoming calm  in the evening.

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 63. West wind around 5 mph becoming calm after midnight.
Sunday
Increasing clouds, with a high near 88. Calm wind becoming south 5 to 7 mph in the afternoon.
Sunday Night
Increasing clouds, with a low around 64. Light west southwest wind.
Monday
Cloudy through mid morning, then gradual clearing, with a high near 86. West southwest wind 3 to 7 mph.
Monday Night
Mostly clear, with a low around 61. West southwest wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 86.
Tuesday Night
Mostly clear, with a low around 62.
Wednesday
Sunny, with a high near 87.
Wednesday Night
Mostly clear, with a low around 62.
Thursday
Sunny, with a high near 87.
Thursday Night
Mostly clear, with a low around 63.
Friday
Sunny, with a high near 86.
Friday Night
Partly cloudy, with a low around 62.
Saturday
Sunny, with a high near 86.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
13 Miles E Mount Hamilton CA
 37.32°N 121.41°W (Elev. 3681 ft)
2:00 pm PDT Aug 22, 2026
11pm PDT Aug 22, 2026-6pm PDT Aug 29, 2026
 
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