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.

30°F

-1°C

Humidity 85%
Wind Speed Calm
Barometer 30.12 in (1021.1 mb)
Dewpoint 26°F (-3°C)
Visibility NA
Last update 30 Apr 6:56 am CDT
Extended Forecast for

Grenville SD

  • Today

    Today: A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 48. Light west wind becoming west northwest 9 to 14 mph in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 40%.

    High: 48 °F

    Mostly Sunny
    then Chance
    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 30. North wind 6 to 11 mph becoming light after midnight. Chance of precipitation is 30%.

    Low: 30 °F

    Chance
    Showers then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 49. Light north northwest wind becoming north 5 to 10 mph in the morning.

    High: 49 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 33. North wind 5 to 7 mph becoming south southeast after midnight.

    Low: 33 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 62. West southwest wind 8 to 13 mph, with gusts as high as 22 mph.

    High: 62 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers before 1am. Mostly cloudy, with a low around 42. Southwest wind around 10 mph becoming northwest after midnight. Chance of precipitation is 20%.

    Low: 42 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 59. North wind 10 to 13 mph, with gusts as high as 21 mph.

    High: 59 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 42. West wind 6 to 13 mph, with gusts as high as 23 mph.

    Low: 42 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 58. Breezy, with a north northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 58 °F

    Mostly Sunny
    and Breezy

Detailed Forecast

Today
A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 48. Light west wind becoming west northwest 9 to 14 mph in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 40%.
Tonight
A chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 30. North wind 6 to 11 mph becoming light after midnight. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 49. Light north northwest wind becoming north 5 to 10 mph in the morning.
Friday Night
Mostly clear, with a low around 33. North wind 5 to 7 mph becoming south southeast after midnight.
Saturday
Mostly sunny, with a high near 62. West southwest wind 8 to 13 mph, with gusts as high as 22 mph.
Saturday Night
A slight chance of showers before 1am. Mostly cloudy, with a low around 42. Southwest wind around 10 mph becoming northwest after midnight. Chance of precipitation is 20%.
Sunday
Mostly sunny, with a high near 59. North wind 10 to 13 mph, with gusts as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 42. West wind 6 to 13 mph, with gusts as high as 23 mph.
Monday
Mostly sunny, with a high near 58. Breezy, with a north northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Monday Night
Partly cloudy, with a low around 37.
Tuesday
A slight chance of showers. Partly sunny, with a high near 54. Chance of precipitation is 20%.
Tuesday Night
Mostly cloudy, with a low around 34.
Wednesday
Mostly sunny, with a high near 48.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grenville SD
 45.46°N 97.37°W (Elev. 1795 ft)
Last Update:
6:36 am CDT Apr 30, 2026
Forecast Valid:
7am CDT Apr 30, 2026-6pm CDT May 6, 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