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.

39°F

4°C

Humidity 79%
Wind Speed SE 7 mph
Barometer 30.20 in (1023.2 mb)
Dewpoint 33°F (1°C)
Visibility NA
Wind Chill34°F (1°C)
Last update 11 Apr 3:56 am CDT
Extended Forecast for

Grenville SD

  • Overnight

    Overnight: A chance of showers. Cloudy, with a steady temperature around 44. South southeast wind around 10 mph. Chance of precipitation is 30%.

    Low: 44 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers, mainly before 11am. Cloudy, with a high near 52. Breezy, with a south southeast wind 15 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 40%.

    High: 52 °F

    Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a temperature rising to around 54 by 2am. Breezy, with a south wind 17 to 20 mph, with gusts as high as 31 mph.

    Low: 50 °F⇑

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Sunday

    Sunday: A slight chance of showers before 7am. Mostly cloudy through mid morning, then gradual clearing, with a high near 72. Breezy, with a south southwest wind 17 to 20 mph becoming west in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 10%.

    High: 72 °F

    Slight Chance
    Showers then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 43. West wind 8 to 14 mph becoming northeast after midnight. Winds could gust as high as 22 mph.

    Low: 43 °F

    Mostly Clear

  • Monday

    Monday: A chance of showers, mainly after 1pm. Partly sunny, with a high near 66. East wind 9 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.

    High: 66 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 45. East northeast wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    Low: 45 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers. Mostly cloudy, with a high near 62. East wind 7 to 13 mph becoming north in the morning. Chance of precipitation is 40%.

    High: 62 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 42. North wind 7 to 10 mph becoming west northwest after midnight. Chance of precipitation is 30%.

    Low: 42 °F

    Chance
    Showers

Detailed Forecast

Overnight
A chance of showers. Cloudy, with a steady temperature around 44. South southeast wind around 10 mph. Chance of precipitation is 30%.
Saturday
A chance of showers, mainly before 11am. Cloudy, with a high near 52. Breezy, with a south southeast wind 15 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 40%.
Saturday Night
Mostly cloudy, with a temperature rising to around 54 by 2am. Breezy, with a south wind 17 to 20 mph, with gusts as high as 31 mph.
Sunday
A slight chance of showers before 7am. Mostly cloudy through mid morning, then gradual clearing, with a high near 72. Breezy, with a south southwest wind 17 to 20 mph becoming west in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 10%.
Sunday Night
Mostly clear, with a low around 43. West wind 8 to 14 mph becoming northeast after midnight. Winds could gust as high as 22 mph.
Monday
A chance of showers, mainly after 1pm. Partly sunny, with a high near 66. East wind 9 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 45. East northeast wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 62. East wind 7 to 13 mph becoming north in the morning. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 42. North wind 7 to 10 mph becoming west northwest after midnight. Chance of precipitation is 30%.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 66. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
A slight chance of showers. Mostly sunny, with a high near 69. Chance of precipitation is 20%.
Thursday Night
A chance of showers. Partly cloudy, with a low around 37. Chance of precipitation is 30%.
Friday
A chance of rain and snow showers. Mostly cloudy, with a high near 45. Breezy. 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:
4:36 am CDT Apr 11, 2026
Forecast Valid:
4am CDT Apr 11, 2026-6pm CDT Apr 17, 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