
Heat Persists in the Southwest; Elevated to Critical Fire Weather in the Great Basin; Poor Air Quality in the West
Dangerous heat will persist across the Southwest U.S. through this week, easing by next week. The heat will focus further east in the Great Plains and Mississippi Valley beginning next week. Elevated to locally critical fire weather conditions will persist for the Great Basin today. Poor air quality lingers for the Northwest, Great Basin, Central Rockies into the Plains. Read More >
Current conditions at
DIABLO GRANDE (DBLC1)
Lat: 37.32927°NLon: 121.29538°WElev: 1861.0ft.NA
73°F
23°C
| Humidity | 36% |
| Wind Speed | S 7 MPH |
| Barometer | NA |
| Dewpoint | 44°F (7°C) |
| Visibility | NA |
| Last update | 04 Aug 06:00 AM PDT |
Extended Forecast for
21 Miles ENE San Martin CA
Today

High: 94 °F
Sunny
Tonight

Low: 64 °F
Clear
Wednesday

High: 94 °F
Sunny
Wednesday Night

Low: 64 °F
Clear
Thursday

High: 96 °F
Hot
Thursday Night

Low: 66 °F
Clear
Friday

High: 97 °F
Hot
Friday Night

Low: 68 °F
Clear
Saturday

High: 97 °F
Hot
Detailed Forecast
Today
Sunny, with a high near 94. Southwest wind 7 to 13 mph, with gusts as high as 22 mph.
Tonight
Clear, with a low around 64. Southwest wind 9 to 13 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 94. West southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Wednesday Night
Clear, with a low around 64. West southwest wind 7 to 10 mph, with gusts as high as 20 mph.
Thursday
Sunny and hot, with a high near 96. West wind 6 to 8 mph becoming south southeast in the morning.
Thursday Night
Clear, with a low around 66.
Friday
Sunny and hot, with a high near 97.
Friday Night
Clear, with a low around 68.
Saturday
Sunny and hot, with a high near 97.
Saturday Night
Mostly clear, with a low around 67.
Sunday
Sunny, with a high near 92.
Sunday Night
Clear, with a low around 61.
Monday
Sunny, with a high near 86.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
21 Miles ENE San Martin CA
37.17°N 121.23°W (Elev. 2211 ft)
37.17°N 121.23°W (Elev. 2211 ft)
2:00 am PDT Aug 4, 2026
6am PDT Aug 4, 2026-6pm PDT Aug 10, 2026


