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.

33°F

1°C

Humidity 89%
Wind Speed NW 13 G 18 mph
Barometer 30.36 in (1029.7 mb)
Dewpoint 30°F (-1°C)
Visibility NA
Wind Chill24°F (-4°C)
Last update 5 Apr 11:56 pm CDT
Extended Forecast for

Grenville SD

  • Overnight

    Overnight: Mostly cloudy, with a low around 20. North wind around 9 mph.

    Low: 20 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 27. North wind around 11 mph, with gusts as high as 20 mph.

    High: 27 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 15. North northeast wind 6 to 10 mph becoming east southeast after midnight.

    Low: 15 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 34. Breezy, with a south southeast wind 11 to 21 mph, with gusts as high as 32 mph.

    High: 34 °F

    Partly Sunny
    then Mostly
    Cloudy and
    Breezy

  • Tuesday Night

    Tuesday Night: A chance of rain after 1am. Mostly cloudy, with a low around 30. Breezy, with a south southeast wind 18 to 21 mph, with gusts as high as 33 mph. Chance of precipitation is 30%.

    Low: 30 °F

    Breezy.
    Mostly Cloudy
    then Chance
    Rain

  • Wednesday

    Wednesday: A chance of rain before 1pm. Partly sunny, with a high near 46. Breezy, with a south wind 10 to 15 mph becoming west 16 to 21 mph in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 40%.

    High: 46 °F

    Chance Rain
    and Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 27. Breezy, with a west wind 16 to 22 mph, with gusts as high as 32 mph.

    Low: 27 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 41. Northwest wind 11 to 14 mph.

    High: 41 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 25. Northwest wind 5 to 9 mph becoming southeast after midnight.

    Low: 25 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 20. North wind around 9 mph.
Monday
Partly sunny, with a high near 27. North wind around 11 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 15. North northeast wind 6 to 10 mph becoming east southeast after midnight.
Tuesday
Partly sunny, with a high near 34. Breezy, with a south southeast wind 11 to 21 mph, with gusts as high as 32 mph.
Tuesday Night
A chance of rain after 1am. Mostly cloudy, with a low around 30. Breezy, with a south southeast wind 18 to 21 mph, with gusts as high as 33 mph. Chance of precipitation is 30%.
Wednesday
A chance of rain before 1pm. Partly sunny, with a high near 46. Breezy, with a south wind 10 to 15 mph becoming west 16 to 21 mph in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 40%.
Wednesday Night
Partly cloudy, with a low around 27. Breezy, with a west wind 16 to 22 mph, with gusts as high as 32 mph.
Thursday
Partly sunny, with a high near 41. Northwest wind 11 to 14 mph.
Thursday Night
Partly cloudy, with a low around 25. Northwest wind 5 to 9 mph becoming southeast after midnight.
Friday
A slight chance of rain and snow before 1pm, then a slight chance of rain. Mostly sunny, with a high near 49. Chance of precipitation is 20%.
Friday Night
A slight chance of rain. Mostly cloudy, with a low around 36. Chance of precipitation is 20%.
Saturday
A chance of rain. Partly sunny, with a high near 54. Chance of precipitation is 30%.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 45. Chance of precipitation is 40%.
Sunday
A chance of rain. Mostly cloudy, with a high near 61. Chance of precipitation is 50%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grenville SD
 45.46°N 97.4°W (Elev. 1821 ft)
Last Update:
12:36 am CDT Apr 6, 2026
Forecast Valid:
12am CDT Apr 6, 2026-6pm CDT Apr 12, 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