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

Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Current conditions at

DIABLO GRANDE (DBLC1)

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

NA

66°F

19°C

Humidity 52%
Wind Speed S 10 MPH
Barometer NA
Dewpoint 48°F (9°C)
Visibility NA
Last update 17 Jun 10:00 PM PDT
Extended Forecast for

19 Miles ENE San Martin CA

  • Tonight

    Tonight: Mostly clear, with a low around 53. Southwest wind 11 to 14 mph, with gusts as high as 20 mph.

    Low: 53 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 77. Southwest wind 9 to 15 mph, with gusts as high as 23 mph.

    High: 77 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 51. West southwest wind 11 to 15 mph, with gusts as high as 25 mph.

    Low: 51 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 74. Southwest wind 9 to 13 mph, with gusts as high as 20 mph.

    High: 74 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 49. West southwest wind 8 to 15 mph, with gusts as high as 23 mph.

    Low: 49 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 53. Southwest wind 11 to 14 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 77. Southwest wind 9 to 15 mph, with gusts as high as 23 mph.
Thursday Night
Mostly clear, with a low around 51. West southwest wind 11 to 15 mph, with gusts as high as 25 mph.
Juneteenth
Sunny, with a high near 74. Southwest wind 9 to 13 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 49. West southwest wind 8 to 15 mph, with gusts as high as 23 mph.
Saturday
Sunny, with a high near 77.
Saturday Night
Mostly clear, with a low around 50.
Sunday
Sunny, with a high near 80.
Sunday Night
Mostly clear, with a low around 51.
Monday
Sunny, with a high near 83.
Monday Night
Clear, with a low around 53.
Tuesday
Sunny, with a high near 88.
Tuesday Night
Clear, with a low around 56.
Wednesday
Sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
19 Miles ENE San Martin CA
 37.18°N 121.29°W (Elev. 2159 ft)
Last Update:
2:00 pm PDT Jun 17, 2026
Forecast Valid:
10pm PDT Jun 17, 2026-6pm PDT Jun 24, 2026
 
Forecast Discussion
 
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Additional Resources

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