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.

22°F

-6°C

Humidity 92%
Wind Speed NW 16 mph
Barometer 29.95 in (1016.8 mb)
Dewpoint 20°F (-7°C)
Visibility NA
Wind Chill8°F (-13°C)
Last update 7 Mar 6:56 am CST
Extended Forecast for

Grenville SD

  • Today

    Today: Patchy fog before 10am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 47. Breezy, with a southwest wind 14 to 20 mph, with gusts as high as 29 mph.

    High: 47 °F

    Patchy Fog
    then Sunny
    and Breezy

  • Tonight

    Tonight: Partly cloudy, with a low around 37. Breezy, with a west southwest wind 14 to 21 mph, with gusts as high as 32 mph.

    Low: 37 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 61. Breezy, with a west southwest wind 14 to 23 mph, with gusts as high as 34 mph.

    High: 61 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 34. West southwest wind 10 to 18 mph becoming north northwest after midnight. Winds could gust as high as 28 mph.

    Low: 34 °F

    Decreasing
    Clouds

  • Monday

    Monday: Mostly sunny, with a high near 44. North wind 10 to 13 mph.

    High: 44 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of snow, mainly after midnight. Cloudy, with a low around 25. East northeast wind 11 to 14 mph. Chance of precipitation is 50%.

    Low: 25 °F

    Slight Chance
    Snow then
    Chance Snow

  • Tuesday

    Tuesday: A chance of snow. Mostly cloudy, with a high near 36. East northeast wind 11 to 14 mph. Chance of precipitation is 30%.

    High: 36 °F

    Chance Snow

  • Tuesday Night

    Tuesday Night: A slight chance of snow before midnight. Mostly cloudy, with a low around 22. Northwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    Low: 22 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of snow before noon. Partly sunny, with a high near 38. Northwest wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    High: 38 °F

    Slight Chance
    Snow then
    Mostly Sunny

Detailed Forecast

Today
Patchy fog before 10am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 47. Breezy, with a southwest wind 14 to 20 mph, with gusts as high as 29 mph.
Tonight
Partly cloudy, with a low around 37. Breezy, with a west southwest wind 14 to 21 mph, with gusts as high as 32 mph.
Sunday
Mostly sunny, with a high near 61. Breezy, with a west southwest wind 14 to 23 mph, with gusts as high as 34 mph.
Sunday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 34. West southwest wind 10 to 18 mph becoming north northwest after midnight. Winds could gust as high as 28 mph.
Monday
Mostly sunny, with a high near 44. North wind 10 to 13 mph.
Monday Night
A chance of snow, mainly after midnight. Cloudy, with a low around 25. East northeast wind 11 to 14 mph. Chance of precipitation is 50%.
Tuesday
A chance of snow. Mostly cloudy, with a high near 36. East northeast wind 11 to 14 mph. Chance of precipitation is 30%.
Tuesday Night
A slight chance of snow before midnight. Mostly cloudy, with a low around 22. Northwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Wednesday
A slight chance of snow before noon. Partly sunny, with a high near 38. Northwest wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 23.
Thursday
A slight chance of rain and snow. Partly sunny, with a high near 48. Chance of precipitation is 20%.
Thursday Night
A chance of rain and snow. Cloudy, with a low around 25. Chance of precipitation is 30%.
Friday
A slight chance of snow. Mostly cloudy, with a high near 35. Breezy. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
Grenville SD
 45.46°N 97.4°W (Elev. 1821 ft)
Last Update:
7:36 am CST Mar 7, 2026
Forecast Valid:
7am CST Mar 7, 2026-6pm CDT Mar 13, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation