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

Sisseton, Sisseton Municipal Airport (K8D3)

Lat: 45.67°NLon: 96.99°WElev: 1161ft.

45°F

7°C

Humidity 58%
Wind Speed S 14 mph
Barometer 29.61 in (1004.3 mb)
Dewpoint 31°F (-1°C)
Visibility NA
Wind Chill39°F (4°C)
Last update 7 Mar 9:56 pm CDT
Extended Forecast for

Grenville SD

  • Tonight

    Tonight: A chance of rain between midnight and 4am. Mostly cloudy, with a low around 36. West wind 13 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 40%.

    Low: 36 °F

    Partly Cloudy
    then Chance
    Rain

  • Sunday

    Sunday: Mostly sunny, with a high near 61. Breezy, with a west southwest wind 13 to 23 mph, with gusts as high as 36 mph.

    High: 61 °F

    Mostly Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 33. West southwest wind 10 to 17 mph becoming north after midnight. Winds could gust as high as 28 mph.

    Low: 33 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 45. North wind 10 to 14 mph.

    High: 45 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of snow after midnight. Mostly cloudy, with a low around 25. East northeast wind around 15 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.

    Low: 25 °F

    Mostly Cloudy
    then Chance
    Snow

  • Tuesday

    Tuesday: A chance of snow, mainly after noon. Mostly cloudy, with a high near 37. East northeast wind around 14 mph. Chance of precipitation is 30%.

    High: 37 °F

    Chance Snow

  • Tuesday Night

    Tuesday Night: A chance of snow, mainly before midnight. Mostly cloudy, with a low around 22. North wind 9 to 15 mph. Chance of precipitation is 30%.

    Low: 22 °F

    Chance Snow

  • Wednesday

    Wednesday: Partly sunny, with a high near 36. Northwest wind 9 to 14 mph, with gusts as high as 23 mph.

    High: 36 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 26. Northwest wind 7 to 15 mph becoming south southwest after midnight.

    Low: 26 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of rain between midnight and 4am. Mostly cloudy, with a low around 36. West wind 13 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 40%.
Sunday
Mostly sunny, with a high near 61. Breezy, with a west southwest wind 13 to 23 mph, with gusts as high as 36 mph.
Sunday Night
Partly cloudy, with a low around 33. West southwest wind 10 to 17 mph becoming north after midnight. Winds could gust as high as 28 mph.
Monday
Mostly sunny, with a high near 45. North wind 10 to 14 mph.
Monday Night
A chance of snow after midnight. Mostly cloudy, with a low around 25. East northeast wind around 15 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
Tuesday
A chance of snow, mainly after noon. Mostly cloudy, with a high near 37. East northeast wind around 14 mph. Chance of precipitation is 30%.
Tuesday Night
A chance of snow, mainly before midnight. Mostly cloudy, with a low around 22. North wind 9 to 15 mph. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 36. Northwest wind 9 to 14 mph, with gusts as high as 23 mph.
Wednesday Night
Partly cloudy, with a low around 26. Northwest wind 7 to 15 mph becoming south southwest after midnight.
Thursday
A slight chance of rain and snow after noon. Mostly cloudy, with a high near 49. Breezy. Chance of precipitation is 20%.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 26. Blustery. Chance of precipitation is 40%.
Friday
Mostly cloudy, with a high near 35. Breezy.
Friday Night
A slight chance of snow. Mostly cloudy, with a low around 19. Chance of precipitation is 20%.
Saturday
A chance of snow. Mostly cloudy, with a high near 35. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grenville SD
 45.46°N 97.4°W (Elev. 1821 ft)
Last Update:
8:46 pm CST Mar 7, 2026
Forecast Valid:
9pm CST Mar 7, 2026-6pm CDT Mar 14, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation