National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Sisseton, Sisseton Municipal Airport (K8D3)

Lat: 45.67°NLon: 96.99°WElev: 1161ft.

24°C

75°F

Humidity 74%
Wind Speed E 13 km/h
Barometer 1004.0 mb (29.70 in)
Dewpoint 19°C (66°F)
Visibility NA
Last update 19 Jun 9:56 pm CDT
Extended Forecast for

Grenville SD

Severe T-storm Watch until June 20, 04:00am
Click here for hazard details and duration
Severe T-storm Watch
  •  
    Severe T-storm Watch until June 20, 04:00am

    NOW until 4:00am Fri

    Severe T-storm Watch

  • Tonight

    Low: 17 °C

    Severe
    Thunderstorms

  • Friday

    Friday: Mostly sunny, with a high near 31. Southeast wind 14 to 19 km/h increasing to 24 to 29 km/h in the afternoon. Winds could gust as high as 48 km/h.

    High: 31 °C

    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms between 9pm and midnight. Mostly clear, with a low around 20. South wind 16 to 24 km/h, with gusts as high as 39 km/h. Chance of precipitation is 20%.

    Low: 20 °C

    Slight Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 33. South wind 16 to 21 km/h, with gusts as high as 39 km/h.

    High: 33 °C

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 21. Southwest wind 13 to 16 km/h becoming northeast after midnight.

    Low: 21 °C

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 31. East wind 18 to 23 km/h becoming southwest 24 to 29 km/h in the afternoon. Winds could gust as high as 55 km/h.

    High: 31 °C

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 13. North northwest wind 24 to 29 km/h decreasing to 18 to 23 km/h after midnight. Winds could gust as high as 48 km/h. Chance of precipitation is 40%.

    Low: 13 °C

    Slight Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: A slight chance of showers before 1pm. Partly sunny, with a high near 20. Northwest wind 18 to 21 km/h, with gusts as high as 35 km/h. Chance of precipitation is 20%.

    High: 20 °C

    Slight Chance
    Showers

Detailed Forecast

Tonight
A chance of showers and thunderstorms, mainly before 5am. Some of the storms could be severe. Partly cloudy, with a low around 17. Southeast wind 16 to 21 km/h, with gusts as high as 35 km/h. Chance of precipitation is 50%.
Friday
Mostly sunny, with a high near 31. Southeast wind 14 to 19 km/h increasing to 24 to 29 km/h in the afternoon. Winds could gust as high as 48 km/h.
Friday Night
A slight chance of showers and thunderstorms between 9pm and midnight. Mostly clear, with a low around 20. South wind 16 to 24 km/h, with gusts as high as 39 km/h. Chance of precipitation is 20%.
Saturday
Sunny and hot, with a high near 33. South wind 16 to 21 km/h, with gusts as high as 39 km/h.
Saturday Night
Mostly clear, with a low around 21. Southwest wind 13 to 16 km/h becoming northeast after midnight.
Sunday
Mostly sunny, with a high near 31. East wind 18 to 23 km/h becoming southwest 24 to 29 km/h in the afternoon. Winds could gust as high as 55 km/h.
Sunday Night
A chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 13. North northwest wind 24 to 29 km/h decreasing to 18 to 23 km/h after midnight. Winds could gust as high as 48 km/h. Chance of precipitation is 40%.
Monday
A slight chance of showers before 1pm. Partly sunny, with a high near 20. Northwest wind 18 to 21 km/h, with gusts as high as 35 km/h. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 11. North northwest wind 11 to 16 km/h becoming northeast after midnight.
Tuesday
A slight chance of showers after 1pm. Partly sunny, with a high near 19. Chance of precipitation is 20%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 12. Chance of precipitation is 50%.
Wednesday
A chance of showers and thunderstorms. Cloudy, with a high near 19. Chance of precipitation is 50%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 13. Chance of precipitation is 50%.
Thursday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 19. Chance of precipitation is 30%.
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 97.4°W (Elev. 1821 m)
Last Update:
9:49 pm CDT Jun 19, 2025
Forecast Valid:
10pm CDT Jun 19, 2025-6pm CDT Jun 26, 2025
 
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