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.

52°F

11°C

Humidity 50%
Wind Speed W 18 G 23 mph
Barometer 30.32 in (1027.8 mb)
Dewpoint 34°F (1°C)
Visibility NA
Wind Chill47°F (8°C)
Last update 10 Apr 2:56 pm CDT
Extended Forecast for

Grenville SD

  • This Afternoon

    This Afternoon: Sunny, with a high near 50. West southwest wind around 8 mph.

    High: 50 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 36. South southwest wind 5 to 13 mph becoming east southeast in the evening. Winds could gust as high as 21 mph.

    Low: 36 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A chance of showers, mainly between 11am and 1pm. 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 30%.

    High: 52 °F

    Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: A slight chance of showers. Mostly cloudy, with a low around 47. South southeast wind around 17 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

    Low: 47 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 72. Breezy, with a south wind 16 to 20 mph becoming west in the afternoon. Winds could gust as high as 31 mph.

    High: 72 °F

    Partly Sunny
    then Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 45. West wind 7 to 14 mph becoming northeast after midnight. Winds could gust as high as 24 mph.

    Low: 45 °F

    Mostly Clear

  • Monday

    Monday: A chance of showers, mainly after 1pm. Partly sunny, with a high near 65. East wind 8 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.

    High: 65 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers, mainly before 1am. Mostly cloudy, with a low around 45. East northeast wind 8 to 11 mph. Chance of precipitation is 30%.

    Low: 45 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers. Mostly cloudy, with a high near 59. North wind 8 to 14 mph. Chance of precipitation is 50%.

    High: 59 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 50. West southwest wind around 8 mph.
Tonight
Increasing clouds, with a low around 36. South southwest wind 5 to 13 mph becoming east southeast in the evening. Winds could gust as high as 21 mph.
Saturday
A chance of showers, mainly between 11am and 1pm. 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 30%.
Saturday Night
A slight chance of showers. Mostly cloudy, with a low around 47. South southeast wind around 17 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Sunday
Mostly sunny, with a high near 72. Breezy, with a south wind 16 to 20 mph becoming west in the afternoon. Winds could gust as high as 31 mph.
Sunday Night
Mostly clear, with a low around 45. West wind 7 to 14 mph becoming northeast after midnight. Winds could gust as high as 24 mph.
Monday
A chance of showers, mainly after 1pm. Partly sunny, with a high near 65. East wind 8 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Monday Night
A chance of showers, mainly before 1am. Mostly cloudy, with a low around 45. East northeast wind 8 to 11 mph. Chance of precipitation is 30%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 59. North wind 8 to 14 mph. Chance of precipitation is 50%.
Tuesday Night
A chance of showers, mainly before 1am. Mostly cloudy, with a low around 41. Chance of precipitation is 40%.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 64. Chance of precipitation is 20%.
Wednesday Night
A slight chance of showers. Mostly clear, with a low around 47. Chance of precipitation is 20%.
Thursday
A slight chance of showers. Mostly sunny, with a high near 69. Breezy. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grenville SD
 45.46°N 97.37°W (Elev. 1795 ft)
Last Update:
2:36 pm CDT Apr 10, 2026
Forecast Valid:
3pm CDT Apr 10, 2026-6pm CDT Apr 16, 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