Extreme Heat in the Southwest; Severe Weather in the Northern Plains; Heavy Rain in the East

Extreme heat continues across the Southwest as temperatures may top 120 degrees. The heat may expand across the West and south-central U.S. into the middle of the month. Severe thunderstorms capable of severe wind gusts and large hail will be the primary hazards today across the northern Plains into the upper Midwest. Rainfall could be locally heavy across the Eastern U.S. today. Read More >

Hazardous Weather Conditions

Current conditions at

DIABLO GRANDE (DBLC1)

Lat: 37.32927° N Lon: 121.29538° W Elev: 1861.0 ft.

NA

97°F

36°C

Humidity 17%
Wind Speed NE 12 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Heat Index93°F (34°C)
Last update 03 Aug 03:00 PM PDT
Detailed forecast for

Eastern Diablo Range Above 1000 ft

Tonight
Clear. Lows 64 to 74. West winds up to 10 mph with gusts to around 20 mph.
Tuesday
Sunny. Highs 92 to 102. Light winds becoming east around 10 mph in the afternoon. Gusts up to 20 mph.
Tuesday Night
Clear. Lows 64 to 74. West winds up to 10 mph with gusts to around 20 mph.
Wednesday
Sunny. Highs 91 to 101. Light winds becoming east around 10 mph in the afternoon.
Wednesday Night
Clear. Lows 64 to 74. West winds up to 10 mph with gusts to around 20 mph.
Thursday
Sunny. Highs 92 to 102.
Thursday Night
Clear. Lows 66 to 76.
Friday Through Sunday
Clear. Highs 94 to 104. Lows 67 to 77.
Sunday Night And Monday
Clear. Lows 61 to 71. Highs 88 to 98.



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202 PM PDT Mon Aug 3 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database