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.

41°F

5°C

Humidity 67%
Wind Speed Vrbl 3 mph
Barometer 30.20 in (1024.1 mb)
Dewpoint 31°F (-1°C)
Visibility NA
Last update 5 Apr 10:56 am CDT
Extended Forecast for

Grenville SD

  • Today

    Today: Mostly sunny, with a high near 39. Northwest wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 39 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 20. North wind 10 to 16 mph, with gusts as high as 25 mph.

    Low: 20 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a steady temperature around 22. North wind around 11 mph, with gusts as high as 20 mph.

    High: 22 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 12. North northeast wind 6 to 9 mph becoming southeast after midnight.

    Low: 12 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 34. Breezy, with a south southeast wind 11 to 20 mph, with gusts as high as 31 mph.

    High: 34 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Tuesday Night

    Tuesday Night: A slight chance of rain after 1am. Mostly cloudy, with a low around 30. Breezy, with a south southeast wind 15 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.

    Low: 30 °F

    Breezy.
    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: A chance of rain, mainly before 1pm. Partly sunny, with a high near 43. South southwest wind 11 to 18 mph becoming west in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 40%.

    High: 43 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 25. West northwest wind 11 to 18 mph, with gusts as high as 28 mph.

    Low: 25 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of snow after 1pm. Mostly cloudy, with a high near 38. North northwest wind 8 to 10 mph. Chance of precipitation is 20%.

    High: 38 °F

    Mostly Cloudy
    then Slight
    Chance Snow

Detailed Forecast

Today
Mostly sunny, with a high near 39. Northwest wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 28 mph.
Tonight
Mostly cloudy, with a low around 20. North wind 10 to 16 mph, with gusts as high as 25 mph.
Monday
Partly sunny, with a steady temperature around 22. North wind around 11 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 12. North northeast wind 6 to 9 mph becoming southeast after midnight.
Tuesday
Mostly cloudy, with a high near 34. Breezy, with a south southeast wind 11 to 20 mph, with gusts as high as 31 mph.
Tuesday Night
A slight chance of rain after 1am. Mostly cloudy, with a low around 30. Breezy, with a south southeast wind 15 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Wednesday
A chance of rain, mainly before 1pm. Partly sunny, with a high near 43. South southwest wind 11 to 18 mph becoming west in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 40%.
Wednesday Night
Partly cloudy, with a low around 25. West northwest wind 11 to 18 mph, with gusts as high as 28 mph.
Thursday
A slight chance of snow after 1pm. Mostly cloudy, with a high near 38. North northwest wind 8 to 10 mph. Chance of precipitation is 20%.
Thursday Night
A slight chance of snow. Mostly cloudy, with a low around 25. Chance of precipitation is 20%.
Friday
A chance of rain and snow. Mostly sunny, with a high near 42. Chance of precipitation is 30%.
Friday Night
A slight chance of rain. Mostly cloudy, with a low around 30. Chance of precipitation is 20%.
Saturday
A chance of rain. Partly sunny, with a high near 49. Chance of precipitation is 30%.
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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:
10:36 am CDT Apr 5, 2026
Forecast Valid:
11am CDT Apr 5, 2026-6pm CDT Apr 11, 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