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.

67°F

19°C

Humidity 30%
Wind Speed NE 5 mph
Barometer 29.80 in (1009.4 mb)
Dewpoint 34°F (1°C)
Visibility NA
Last update 29 Mar 5:56 pm CDT
Extended Forecast for

Grenville SD

  • Tonight

    Tonight: Partly cloudy, with a low around 33. North northwest wind 5 to 10 mph becoming east northeast after midnight.

    Low: 33 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 62. East northeast wind 10 to 14 mph becoming south in the afternoon. Winds could gust as high as 22 mph.

    High: 62 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A slight chance of rain between 1am and 2am. Increasing clouds, with a low around 32. Breezy, with an east northeast wind 11 to 16 mph becoming north 17 to 22 mph after midnight. Winds could gust as high as 36 mph. Chance of precipitation is 20%.

    Low: 32 °F

    Partly Cloudy
    then Slight
    Chance Rain
    and Breezy

  • Tuesday

    Tuesday: Cloudy, then gradually becoming mostly sunny, with a high near 40. Breezy, with a north northwest wind 21 to 24 mph, with gusts as high as 37 mph.

    High: 40 °F

    Decreasing
    Clouds and
    Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 20. Northeast wind 9 to 18 mph, with gusts as high as 28 mph.

    Low: 20 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of snow after 1pm. Mostly cloudy, with a high near 39. East wind 9 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.

    High: 39 °F

    Mostly Cloudy
    then Chance
    Snow

  • Wednesday Night

    Wednesday Night: A chance of snow. Mostly cloudy, with a low around 28. East southeast wind around 16 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.

    Low: 28 °F

    Chance Snow

  • Thursday

    Thursday: A chance of snow. Mostly cloudy, with a high near 41. Breezy, with an east southeast wind 17 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 40%.

    High: 41 °F

    Chance Snow
    and Breezy

  • Thursday Night

    Thursday Night: A chance of snow. Mostly cloudy, with a low around 30. Breezy, with an east southeast wind 18 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.

    Low: 30 °F

    Chance Snow
    and Breezy

Detailed Forecast

Tonight
Partly cloudy, with a low around 33. North northwest wind 5 to 10 mph becoming east northeast after midnight.
Monday
Mostly sunny, with a high near 62. East northeast wind 10 to 14 mph becoming south in the afternoon. Winds could gust as high as 22 mph.
Monday Night
A slight chance of rain between 1am and 2am. Increasing clouds, with a low around 32. Breezy, with an east northeast wind 11 to 16 mph becoming north 17 to 22 mph after midnight. Winds could gust as high as 36 mph. Chance of precipitation is 20%.
Tuesday
Cloudy, then gradually becoming mostly sunny, with a high near 40. Breezy, with a north northwest wind 21 to 24 mph, with gusts as high as 37 mph.
Tuesday Night
Partly cloudy, with a low around 20. Northeast wind 9 to 18 mph, with gusts as high as 28 mph.
Wednesday
A chance of snow after 1pm. Mostly cloudy, with a high near 39. East wind 9 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 28. East southeast wind around 16 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.
Thursday
A chance of snow. Mostly cloudy, with a high near 41. Breezy, with an east southeast wind 17 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 40%.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 30. Breezy, with an east southeast wind 18 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.
Friday
Rain and snow likely, mainly after 1pm. Mostly cloudy, with a high near 44. Breezy. Chance of precipitation is 60%.
Friday Night
Rain and snow likely. Mostly cloudy, with a low around 29. Chance of precipitation is 60%.
Saturday
A chance of rain and snow. Mostly cloudy, with a high near 37. Breezy. Chance of precipitation is 50%.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 23. Blustery. Chance of precipitation is 30%.
Sunday
A slight chance of snow. Mostly sunny, with a high near 39. Breezy. Chance of precipitation is 20%.
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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:
5:36 pm CDT Mar 29, 2026
Forecast Valid:
6pm CDT Mar 29, 2026-6pm CDT Apr 5, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation