Showers and Storms in the East; Dangerously Hot and Dry in the West

Scattered showers and storms are expected across portions of the Central and Eastern U.S. through the end of the week. Meanwhile, dangerous heat will intensify across the Desert Southwest and Intermountain West. Hot, dry weather and increasing winds will allow elevated wildfire conditions to return to the northern Intermountain West, where air quality issues persist from ongoing fires. Read More >

Hazardous Weather Conditions

Current conditions at

DIABLO GRANDE (DBLC1)

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

NA

98°F

37°C

Humidity 15%
Wind Speed ENE 8 MPH
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Heat Index94°F (34°C)
Last update 08 Aug 02:00 PM PDT
Extended Forecast for

20 Miles ENE San Martin CA

Heat Advisory August 8, 03:08pm until August 9, 10:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 8, 03:08pm until August 9, 10:00pm

    NOW until 10:00pm Sun

    Heat Advisory

  • Tonight

    Low: 67 °F

    Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 99. Light and variable wind becoming southwest 5 to 9 mph in the afternoon.

    High: 99 °F

    Hot

  • Sunday Night

    Sunday Night: Clear, with a low around 66. West southwest wind around 9 mph.

    Low: 66 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 93. Southwest wind 9 to 14 mph, with gusts as high as 22 mph.

    High: 93 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 62. West southwest wind 7 to 13 mph, with gusts as high as 22 mph.

    Low: 62 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

Detailed Forecast

Tonight
Clear, with a low around 67. Southwest wind 5 to 7 mph.
Sunday
Sunny and hot, with a high near 99. Light and variable wind becoming southwest 5 to 9 mph in the afternoon.
Sunday Night
Clear, with a low around 66. West southwest wind around 9 mph.
Monday
Sunny, with a high near 93. Southwest wind 9 to 14 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 62. West southwest wind 7 to 13 mph, with gusts as high as 22 mph.
Tuesday
Sunny, with a high near 92.
Tuesday Night
Mostly clear, with a low around 61.
Wednesday
Mostly sunny, with a high near 89.
Wednesday Night
Partly cloudy, with a low around 59.
Thursday
Sunny, with a high near 85.
Thursday Night
Mostly clear, with a low around 58.
Friday
Mostly sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 58.
Saturday
Sunny, with a high near 86.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
20 Miles ENE San Martin CA
 37.22°N 121.3°W (Elev. 1434 ft)
2:01 pm PDT Aug 8, 2026
3pm PDT Aug 8, 2026-6pm PDT Aug 15, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database