Severe Thunderstorms and Flooding from the Southern Plains to the Great Lakes; Record Heat in the East

Widely scattered severe thunderstorms may produce damaging winds, hail, and flash flooding from the southern Plains into the lower Great Lakes. Elevated to locally critical fire weather conditions will persist across portions of the Southwest and Southern High Plains due to gusty winds and dry conditions. An early-season heatwave will challenge temperature records across the eastern U.S.. Read More >

Current conditions at

DIABLO GRANDE (DBLC1)

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

NA

82°F

28°C

Humidity 9%
Wind Speed NNE 8 MPH
Barometer NA
Dewpoint 18°F (-8°C)
Visibility NA
Heat Index80°F (27°C)
Last update 19 May 04:00 PM PDT
Extended Forecast for

16 Miles SW Modesto CA

  • Tonight

    Tonight: Clear, with a low around 62. North wind 5 to 9 mph becoming light and variable  after midnight.

    Low: 62 °F

    Clear

  • Wednesday

    Wednesday: Increasing clouds, with a high near 91. Calm wind becoming north northeast around 6 mph in the afternoon.

    High: 91 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 63. West northwest wind 5 to 8 mph becoming calm  after midnight.

    Low: 63 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 93. Calm wind becoming north around 6 mph in the afternoon.

    High: 93 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 63. North northwest wind 5 to 8 mph becoming calm  in the evening.

    Low: 63 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 59.

    Low: 59 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Tonight
Clear, with a low around 62. North wind 5 to 9 mph becoming light and variable after midnight.
Wednesday
Increasing clouds, with a high near 91. Calm wind becoming north northeast around 6 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 63. West northwest wind 5 to 8 mph becoming calm after midnight.
Thursday
Sunny, with a high near 93. Calm wind becoming north around 6 mph in the afternoon.
Thursday Night
Clear, with a low around 63. North northwest wind 5 to 8 mph becoming calm in the evening.
Friday
Sunny, with a high near 93.
Friday Night
Clear, with a low around 59.
Saturday
Sunny, with a high near 90.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Sunny, with a high near 88.
Sunday Night
Mostly clear, with a low around 56.
Memorial Day
Sunny, with a high near 85.
Monday Night
Mostly clear, with a low around 57.
Tuesday
Sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
16 Miles SW Modesto CA
 37.47°N 121.19°W (Elev. 269 ft)
2:00 pm PDT May 19, 2026
5pm PDT May 19, 2026-6pm PDT May 26, 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