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.

Breezy

32°F

0°C

Humidity 88%
Wind Speed N 21 mph
Barometer 30.00 in (1016.5 mb)
Dewpoint 29°F (-2°C)
Visibility NA
Wind Chill20°F (-7°C)
Last update 22 Mar 4:56 am CDT
Extended Forecast for

Grenville SD

  • Today

    Today: Cloudy through mid morning, then gradual clearing, with a high near 40. North wind 11 to 18 mph, with gusts as high as 29 mph.

    High: 40 °F

    Gradual
    Clearing

  • Tonight

    Tonight: Mostly clear, with a low around 27. North northwest wind 5 to 8 mph becoming south southeast in the evening.

    Low: 27 °F

    Mostly Clear

  • Monday

    Monday: A chance of sprinkles after 1pm. Increasing clouds, with a high near 50. South wind 7 to 17 mph, with gusts as high as 26 mph.

    High: 50 °F

    Chance
    Sprinkles

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 32. South wind 11 to 14 mph, with gusts as high as 23 mph.

    Low: 32 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 49. East wind 10 to 14 mph.

    High: 49 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 34. East wind 11 to 13 mph.

    Low: 34 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 60. East northeast wind 10 to 14 mph becoming southwest in the afternoon.

    High: 60 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of rain after 1am. Mostly cloudy, with a low around 30. Southwest wind 11 to 14 mph becoming north northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 20%.

    Low: 30 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Thursday

    Thursday: Partly sunny, with a high near 41. Breezy, with a north northwest wind 15 to 21 mph, with gusts as high as 31 mph.

    High: 41 °F

    Partly Sunny
    and Breezy

Detailed Forecast

Today
Cloudy through mid morning, then gradual clearing, with a high near 40. North wind 11 to 18 mph, with gusts as high as 29 mph.
Tonight
Mostly clear, with a low around 27. North northwest wind 5 to 8 mph becoming south southeast in the evening.
Monday
A chance of sprinkles after 1pm. Increasing clouds, with a high near 50. South wind 7 to 17 mph, with gusts as high as 26 mph.
Monday Night
Mostly cloudy, with a low around 32. South wind 11 to 14 mph, with gusts as high as 23 mph.
Tuesday
Mostly cloudy, with a high near 49. East wind 10 to 14 mph.
Tuesday Night
Mostly cloudy, with a low around 34. East wind 11 to 13 mph.
Wednesday
Partly sunny, with a high near 60. East northeast wind 10 to 14 mph becoming southwest in the afternoon.
Wednesday Night
A slight chance of rain after 1am. Mostly cloudy, with a low around 30. Southwest wind 11 to 14 mph becoming north northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 20%.
Thursday
Partly sunny, with a high near 41. Breezy, with a north northwest wind 15 to 21 mph, with gusts as high as 31 mph.
Thursday Night
Partly cloudy, with a low around 17.
Friday
Mostly sunny, with a high near 41.
Friday Night
Mostly clear, with a low around 25.
Saturday
Mostly sunny, with a high near 48.
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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:
4:36 am CDT Mar 22, 2026
Forecast Valid:
5am CDT Mar 22, 2026-6pm CDT Mar 28, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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