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.

74°F

23°C

Humidity 54%
Wind Speed NE 6 mph
Barometer 30.19 in (1020.9 mb)
Dewpoint 56°F (13°C)
Visibility NA
Last update 22 Aug 1:56 pm CDT
Extended Forecast for

4 Miles S Grenville SD

  • This Afternoon

    This Afternoon: Sunny, with a steady temperature around 68. Calm wind.

    High: 68 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 55. North wind 5 to 7 mph becoming south southeast after midnight.

    Low: 55 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 77. South southeast wind 7 to 9 mph.

    High: 77 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of showers before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 62. Southeast wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.

    Low: 62 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Monday

    Monday: A slight chance of showers before 1pm. Partly sunny, with a high near 78. South southeast wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    High: 78 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 4am, then a slight chance of showers. Partly cloudy, with a low around 63. South wind around 9 mph. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Sunny, with a high near 81. West wind 8 to 17 mph, with gusts as high as 30 mph.

    High: 81 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 61. West northwest wind 7 to 14 mph.

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 78. Northwest wind 9 to 14 mph. Chance of precipitation is 20%.

    High: 78 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a steady temperature around 68. Calm wind.
Tonight
Partly cloudy, with a low around 55. North wind 5 to 7 mph becoming south southeast after midnight.
Sunday
Mostly sunny, with a high near 77. South southeast wind 7 to 9 mph.
Sunday Night
A chance of showers before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 62. Southeast wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.
Monday
A slight chance of showers before 1pm. Partly sunny, with a high near 78. South southeast wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Monday Night
A chance of showers and thunderstorms before 4am, then a slight chance of showers. Partly cloudy, with a low around 63. South wind around 9 mph. Chance of precipitation is 30%.
Tuesday
Sunny, with a high near 81. West wind 8 to 17 mph, with gusts as high as 30 mph.
Tuesday Night
Mostly clear, with a low around 61. West northwest wind 7 to 14 mph.
Wednesday
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 78. Northwest wind 9 to 14 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 59.
Thursday
Sunny, with a high near 78.
Thursday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 60. Chance of precipitation is 20%.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 79. Chance of precipitation is 20%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Grenville SD
 45.42°N 97.4°W (Elev. 1795 ft)
Last Update:
2:06 pm CDT Aug 22, 2026
Forecast Valid:
2pm CDT Aug 22, 2026-6pm CDT Aug 28, 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