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.

42°F

6°C

Humidity 41%
Wind Speed NW 16 mph
Barometer 30.00 in (1017.3 mb)
Dewpoint 20°F (-7°C)
Visibility NA
Wind Chill34°F (1°C)
Last update 18 Apr 8:56 pm CDT
Extended Forecast for

Grenville SD

  • Tonight

    Tonight: A chance of rain and snow showers before 2am, then scattered flurries after 5am. Mostly cloudy, with a low around 26. West northwest wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    Low: 26 °F

    Slight Chance
    Rain/Flurries
    then Isolated
    Snow Showers

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny, with a high near 41. North wind around 9 mph.

    High: 41 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 28. North wind 6 to 11 mph becoming south southeast after midnight. Winds could gust as high as 20 mph.

    Low: 28 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 65. Breezy, with a south wind 14 to 22 mph, with gusts as high as 36 mph.

    High: 65 °F

    Mostly Sunny
    and Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 39. Southwest wind 9 to 14 mph becoming north after midnight. Winds could gust as high as 22 mph.

    Low: 39 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 67. Northeast wind around 8 mph.

    High: 67 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 50. Southeast wind 10 to 15 mph, with gusts as high as 26 mph.

    Low: 50 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 80. Breezy, with a south southeast wind 16 to 25 mph, with gusts as high as 37 mph.

    High: 80 °F

    Mostly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 56. Breezy, with a south wind 23 to 25 mph, with gusts as high as 38 mph. Chance of precipitation is 50%.

    Low: 56 °F

    Chance
    Showers and
    Breezy

Detailed Forecast

Tonight
A chance of rain and snow showers before 2am, then scattered flurries after 5am. Mostly cloudy, with a low around 26. West northwest wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Sunday
Partly sunny, then gradually becoming sunny, with a high near 41. North wind around 9 mph.
Sunday Night
Mostly clear, with a low around 28. North wind 6 to 11 mph becoming south southeast after midnight. Winds could gust as high as 20 mph.
Monday
Mostly sunny, with a high near 65. Breezy, with a south wind 14 to 22 mph, with gusts as high as 36 mph.
Monday Night
Mostly clear, with a low around 39. Southwest wind 9 to 14 mph becoming north after midnight. Winds could gust as high as 22 mph.
Tuesday
Sunny, with a high near 67. Northeast wind around 8 mph.
Tuesday Night
Mostly clear, with a low around 50. Southeast wind 10 to 15 mph, with gusts as high as 26 mph.
Wednesday
Mostly sunny, with a high near 80. Breezy, with a south southeast wind 16 to 25 mph, with gusts as high as 37 mph.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 56. Breezy, with a south wind 23 to 25 mph, with gusts as high as 38 mph. Chance of precipitation is 50%.
Thursday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 69. Breezy. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 33. Breezy. Chance of precipitation is 40%.
Friday
A chance of rain and snow showers. Partly sunny, with a high near 46. Breezy. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 29. Blustery.
Saturday
Partly sunny, with a high near 45.
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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:
8:36 pm CDT Apr 18, 2026
Forecast Valid:
9pm CDT Apr 18, 2026-6pm CDT Apr 25, 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