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.

34°F

1°C

Humidity 89%
Wind Speed NW 9 mph
Barometer 29.82 in (1010.1 mb)
Dewpoint 31°F (-1°C)
Visibility NA
Wind Chill27°F (-3°C)
Last update 30 Mar 3:56 am CDT
Extended Forecast for

Grenville SD

  • Today

    Today: Mostly sunny, with a high near 61. Northeast wind 7 to 13 mph becoming southeast in the afternoon.

    High: 61 °F

    Mostly Sunny

  • Tonight

    Tonight: A chance of rain, mainly between 1am and 4am. Increasing clouds, with a low around 32. Breezy, with an east wind 10 to 15 mph becoming north 16 to 21 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 30%.

    Low: 32 °F

    Partly Cloudy
    then Chance
    Rain and
    Breezy

  • Tuesday

    Tuesday: Partly sunny, with a high near 40. Breezy, with a north northwest wind 21 to 24 mph, with gusts as high as 33 mph.

    High: 40 °F

    Partly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 22. North wind 10 to 16 mph becoming east northeast after midnight. Winds could gust as high as 26 mph.

    Low: 22 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of snow. Cloudy, with a high near 34. East wind 10 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 50%.

    High: 34 °F

    Chance Snow

  • Wednesday Night

    Wednesday Night: Snow likely. Cloudy, with a low around 26. East wind around 17 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 26 °F

    Snow Likely

  • Thursday

    Thursday: Snow likely. Cloudy, with a high near 34. East wind around 17 mph, with gusts as high as 28 mph. Chance of precipitation is 70%.

    High: 34 °F

    Snow Likely

  • Thursday Night

    Thursday Night: A chance of snow. Mostly cloudy, with a low around 25. East wind 14 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.

    Low: 25 °F

    Chance Snow

  • Friday

    Friday: Snow likely, mainly after 1pm. Cloudy, with a high near 34. Breezy, with an east wind 15 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.

    High: 34 °F

    Snow Likely
    and Breezy

Detailed Forecast

Today
Mostly sunny, with a high near 61. Northeast wind 7 to 13 mph becoming southeast in the afternoon.
Tonight
A chance of rain, mainly between 1am and 4am. Increasing clouds, with a low around 32. Breezy, with an east wind 10 to 15 mph becoming north 16 to 21 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 40. Breezy, with a north northwest wind 21 to 24 mph, with gusts as high as 33 mph.
Tuesday Night
Mostly cloudy, with a low around 22. North wind 10 to 16 mph becoming east northeast after midnight. Winds could gust as high as 26 mph.
Wednesday
A chance of snow. Cloudy, with a high near 34. East wind 10 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 50%.
Wednesday Night
Snow likely. Cloudy, with a low around 26. East wind around 17 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Thursday
Snow likely. Cloudy, with a high near 34. East wind around 17 mph, with gusts as high as 28 mph. Chance of precipitation is 70%.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 25. East wind 14 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Friday
Snow likely, mainly after 1pm. Cloudy, with a high near 34. Breezy, with an east wind 15 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.
Friday Night
Snow likely, mainly before 1am. Cloudy, with a low around 26. Chance of precipitation is 60%.
Saturday
A chance of snow. Mostly cloudy, with a high near 34. Breezy. Chance of precipitation is 40%.
Saturday Night
A slight chance of snow. Mostly cloudy, with a low around 21. Blustery. Chance of precipitation is 20%.
Sunday
Mostly sunny, with a high near 39.
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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:
3:36 am CDT Mar 30, 2026
Forecast Valid:
4am CDT Mar 30, 2026-6pm CDT Apr 5, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation