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Severe Thunderstorms and Heavy Rainfall Today from the Central Plains into the Tennessee Valley

Severe thunderstorms capable of damaging winds will be possible from the Ozark Plateau east into portions of the Southeast today. Rounds of heavy thunderstorms ahead of a slow moving front will continue locally heavy rainfall and scattered flash flooding potential from the Ozarks to the Ohio and Tennessee Valleys today. Read More >

Hazardous Weather Conditions

Current conditions at

Sisseton, Sisseton Municipal Airport (K8D3)

Lat: 45.67°NLon: 96.99°WElev: 1161ft.

73°F

23°C

Humidity 84%
Wind Speed S 8 mph
Barometer 30.04 in (1014.9 mb)
Dewpoint 68°F (20°C)
Visibility NA
Last update 12 Jul 1:56 am CDT
Extended Forecast for

6 Miles E Grenville SD

Heat Advisory July 12, 02:53am until July 14, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 12, 02:53am until July 14, 07:00pm

    NOW until 7:00pm Tue

    Heat Advisory

  • Overnight

    Low: 71 °F

    Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 93. South southwest wind around 16 mph, with gusts as high as 28 mph.

    High: 93 °F

    Hot

  • Sunday Night

    Sunday Night: Clear, with a low around 73. South southwest wind 13 to 17 mph, with gusts as high as 31 mph.

    Low: 73 °F

    Clear

  • Monday

    Monday: Sunny and hot, with a high near 93. Breezy, with a south southwest wind 18 to 20 mph, with gusts as high as 33 mph.

    High: 93 °F

    Hot and
    Breezy

  • Monday Night

    Monday Night: Clear, with a low around 74. South wind 15 to 17 mph, with gusts as high as 30 mph.

    Low: 74 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 94. Southwest wind 7 to 14 mph, with gusts as high as 25 mph.

    High: 94 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 71. South southeast wind 7 to 9 mph.

    Low: 71 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 91. Southeast wind 9 to 11 mph, with gusts as high as 21 mph.

    High: 91 °F

    Hot

Detailed Forecast

Overnight
Clear, with a low around 71. South southwest wind 11 to 13 mph, with gusts as high as 22 mph.
Sunday
Sunny and hot, with a high near 93. South southwest wind around 16 mph, with gusts as high as 28 mph.
Sunday Night
Clear, with a low around 73. South southwest wind 13 to 17 mph, with gusts as high as 31 mph.
Monday
Sunny and hot, with a high near 93. Breezy, with a south southwest wind 18 to 20 mph, with gusts as high as 33 mph.
Monday Night
Clear, with a low around 74. South wind 15 to 17 mph, with gusts as high as 30 mph.
Tuesday
Sunny and hot, with a high near 94. Southwest wind 7 to 14 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly clear, with a low around 71. South southeast wind 7 to 9 mph.
Wednesday
Sunny and hot, with a high near 91. Southeast wind 9 to 11 mph, with gusts as high as 21 mph.
Wednesday Night
Mostly clear, with a low around 72. East southeast wind 10 to 13 mph, with gusts as high as 24 mph.
Thursday
Mostly sunny and hot, with a high near 93.
Thursday Night
Partly cloudy, with a low around 72.
Friday
Mostly sunny and hot, with a high near 92.
Friday Night
Mostly clear, with a low around 71.
Saturday
Mostly sunny, with a high near 89.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles E Grenville SD
 45.48°N 97.25°W (Elev. 1900 ft)
Last Update:
2:36 am CDT Jul 12, 2026
Forecast Valid:
2am CDT Jul 12, 2026-6pm CDT Jul 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation