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.

59°F

15°C

Humidity 49%
Wind Speed W 12 mph
Barometer 29.79 in (1008.7 mb)
Dewpoint 40°F (4°C)
Visibility NA
Last update 19 Mar 11:56 pm CDT
Extended Forecast for

Grenville SD

  • Overnight

    Overnight: Partly cloudy, with a low around 37. North northwest wind 5 to 8 mph.

    Low: 37 °F

    Partly Cloudy

  • Friday

    Friday: Patchy fog between 8am and 10am. Otherwise, mostly sunny, with a high near 61. North northwest wind 5 to 11 mph becoming southwest in the morning.

    High: 61 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 42. Southwest wind 7 to 10 mph.

    Low: 42 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 70. Southwest wind 10 to 14 mph becoming west northwest in the afternoon.

    High: 70 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain after 1am. Mostly cloudy, with a low around 33. North northeast wind 14 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

    Low: 33 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Sunday

    Sunday: Partly sunny, with a high near 42. North northwest wind 16 to 18 mph, with gusts as high as 26 mph.

    High: 42 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 24. North northwest wind 7 to 13 mph becoming east after midnight.

    Low: 24 °F

    Mostly Clear

  • Monday

    Monday: Partly sunny, with a high near 49. South wind 8 to 18 mph, with gusts as high as 28 mph.

    High: 49 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 33. South wind 9 to 15 mph becoming east after midnight. Winds could gust as high as 23 mph.

    Low: 33 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 37. North northwest wind 5 to 8 mph.
Friday
Patchy fog between 8am and 10am. Otherwise, mostly sunny, with a high near 61. North northwest wind 5 to 11 mph becoming southwest in the morning.
Friday Night
Partly cloudy, with a low around 42. Southwest wind 7 to 10 mph.
Saturday
Mostly sunny, with a high near 70. Southwest wind 10 to 14 mph becoming west northwest in the afternoon.
Saturday Night
A slight chance of rain after 1am. Mostly cloudy, with a low around 33. North northeast wind 14 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Sunday
Partly sunny, with a high near 42. North northwest wind 16 to 18 mph, with gusts as high as 26 mph.
Sunday Night
Mostly clear, with a low around 24. North northwest wind 7 to 13 mph becoming east after midnight.
Monday
Partly sunny, with a high near 49. South wind 8 to 18 mph, with gusts as high as 28 mph.
Monday Night
Mostly cloudy, with a low around 33. South wind 9 to 15 mph becoming east after midnight. Winds could gust as high as 23 mph.
Tuesday
Mostly cloudy, with a high near 50.
Tuesday Night
Mostly cloudy, with a low around 32.
Wednesday
Mostly cloudy, with a high near 60.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 40. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grenville SD
 45.46°N 97.4°W (Elev. 1821 ft)
Last Update:
11:36 pm CDT Mar 19, 2026
Forecast Valid:
12am CDT Mar 20, 2026-6pm CDT Mar 26, 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