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.

30°F

-1°C

Humidity 88%
Wind Speed NW 6 mph
Barometer 29.86 in (1011.8 mb)
Dewpoint 27°F (-3°C)
Visibility NA
Wind Chill24°F (-4°C)
Last update 29 Mar 6:56 am CDT
Extended Forecast for

Grenville SD

  • Today

    Today: Partly sunny, then gradually becoming sunny, with a high near 64. South southeast wind 6 to 8 mph becoming west in the afternoon.

    High: 64 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 36. Northwest wind 6 to 10 mph becoming east after midnight.

    Low: 36 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 61. East wind 11 to 14 mph, with gusts as high as 23 mph.

    High: 61 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of rain between 1am and 4am, then a chance of snow after 4am. Increasing clouds, with a low around 31. Northeast wind 11 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.

    Low: 31 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Tuesday

    Tuesday: A chance of snow before 7am. Partly sunny, with a high near 40. Breezy, with a northwest wind 18 to 22 mph, with gusts as high as 32 mph. Chance of precipitation is 30%.

    High: 40 °F

    Breezy.
    Chance Snow
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 19. North northeast wind 9 to 18 mph, with gusts as high as 29 mph.

    Low: 19 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 42. East southeast wind 8 to 15 mph, with gusts as high as 24 mph.

    High: 42 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of snow after 1am. Mostly cloudy, with a low around 29. East southeast wind around 18 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

    Low: 29 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Thursday

    Thursday: A chance of snow. Mostly cloudy, with a high near 44. Breezy, with a southeast wind 18 to 25 mph, with gusts as high as 38 mph. Chance of precipitation is 40%.

    High: 44 °F

    Chance Snow
    and Breezy

Detailed Forecast

Today
Partly sunny, then gradually becoming sunny, with a high near 64. South southeast wind 6 to 8 mph becoming west in the afternoon.
Tonight
Partly cloudy, with a low around 36. Northwest wind 6 to 10 mph becoming east after midnight.
Monday
Mostly sunny, with a high near 61. East wind 11 to 14 mph, with gusts as high as 23 mph.
Monday Night
A chance of rain between 1am and 4am, then a chance of snow after 4am. Increasing clouds, with a low around 31. Northeast wind 11 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.
Tuesday
A chance of snow before 7am. Partly sunny, with a high near 40. Breezy, with a northwest wind 18 to 22 mph, with gusts as high as 32 mph. Chance of precipitation is 30%.
Tuesday Night
Partly cloudy, with a low around 19. North northeast wind 9 to 18 mph, with gusts as high as 29 mph.
Wednesday
Mostly sunny, with a high near 42. East southeast wind 8 to 15 mph, with gusts as high as 24 mph.
Wednesday Night
A slight chance of snow after 1am. Mostly cloudy, with a low around 29. East southeast wind around 18 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Thursday
A chance of snow. Mostly cloudy, with a high near 44. Breezy, with a southeast wind 18 to 25 mph, with gusts as high as 38 mph. Chance of precipitation is 40%.
Thursday Night
A chance of snow before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 31. Breezy. Chance of precipitation is 50%.
Friday
Rain and snow likely. Mostly cloudy, with a high near 43. Breezy. Chance of precipitation is 60%.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 28. Chance of precipitation is 50%.
Saturday
A chance of snow. Mostly cloudy, with a high near 38. Breezy. Chance of precipitation is 40%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grenville SD
 45.46°N 97.4°W (Elev. 1821 ft)
Last Update:
6:36 am CDT Mar 29, 2026
Forecast Valid:
7am CDT Mar 29, 2026-6pm CDT Apr 4, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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