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 68%
Wind Speed N 12 mph
Barometer 30.50 in (1036.0 mb)
Dewpoint 13°F (-11°C)
Visibility NA
Wind Chill10°F (-12°C)
Last update 6 Apr 8:56 pm CDT
Extended Forecast for

Grenville SD

  • Tonight

    Tonight: Mostly clear, with a low around 15. Northeast wind 6 to 10 mph becoming east southeast after midnight.

    Low: 15 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 37. Breezy, with a south southeast wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 32 mph.

    High: 37 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: A slight chance of rain after 1am. Mostly cloudy, with a low around 31. Breezy, with a south wind 18 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 20%.

    Low: 31 °F

    Breezy.
    Partly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: A chance of rain before 1pm. Partly sunny, with a high near 47. Breezy, with a west wind 11 to 16 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 30%.

    High: 47 °F

    Chance Rain
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 25. Breezy, with a west wind 14 to 23 mph, with gusts as high as 34 mph.

    Low: 25 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Thursday

    Thursday: A slight chance of snow after 1pm. Partly sunny, with a high near 40. Northwest wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 40 °F

    Mostly Sunny
    then Slight
    Chance Snow

  • Thursday Night

    Thursday Night: A slight chance of rain and snow before 1am, then a slight chance of snow. Mostly cloudy, with a low around 26. North northwest wind 5 to 8 mph. Chance of precipitation is 20%.

    Low: 26 °F

    Slight Chance
    Rain/Snow

  • Friday

    Friday: Sunny, with a high near 50. West northwest wind 5 to 8 mph.

    High: 50 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 36. South southeast wind 7 to 11 mph, with gusts as high as 20 mph.

    Low: 36 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 15. Northeast wind 6 to 10 mph becoming east southeast after midnight.
Tuesday
Mostly sunny, with a high near 37. Breezy, with a south southeast wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 32 mph.
Tuesday Night
A slight chance of rain after 1am. Mostly cloudy, with a low around 31. Breezy, with a south wind 18 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 20%.
Wednesday
A chance of rain before 1pm. Partly sunny, with a high near 47. Breezy, with a west wind 11 to 16 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 30%.
Wednesday Night
Mostly clear, with a low around 25. Breezy, with a west wind 14 to 23 mph, with gusts as high as 34 mph.
Thursday
A slight chance of snow after 1pm. Partly sunny, with a high near 40. Northwest wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Thursday Night
A slight chance of rain and snow before 1am, then a slight chance of snow. Mostly cloudy, with a low around 26. North northwest wind 5 to 8 mph. Chance of precipitation is 20%.
Friday
Sunny, with a high near 50. West northwest wind 5 to 8 mph.
Friday Night
Partly cloudy, with a low around 36. South southeast wind 7 to 11 mph, with gusts as high as 20 mph.
Saturday
A chance of rain. Mostly cloudy, with a high near 56. Breezy. Chance of precipitation is 30%.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 47. Chance of precipitation is 40%.
Sunday
A chance of rain. Mostly cloudy, with a high near 68. Chance of precipitation is 50%.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 47. Chance of precipitation is 50%.
Monday
A chance of rain. Partly sunny, with a high near 63. Chance of precipitation is 40%.
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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:
8:36 pm CDT Apr 6, 2026
Forecast Valid:
9pm CDT Apr 6, 2026-6pm CDT Apr 13, 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