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.

43°F

6°C

Humidity 65%
Wind Speed SE 7 mph
Barometer 29.80 in (1008.8 mb)
Dewpoint 32°F (0°C)
Visibility NA
Wind Chill39°F (4°C)
Last update 22 Apr 2:56 am CDT
Extended Forecast for

Grenville SD

Red Flag Warning April 22, 12:00pm until April 22, 08:00pm
Click here for hazard details and duration
Red Flag Warning

  • Overnight

    Overnight: Mostly clear, with a low around 50. South southeast wind around 8 mph.

    Low: 50 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 85. Breezy, with a south southeast wind 14 to 22 mph, with gusts as high as 33 mph.

    High: 85 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 58. Breezy, with a south wind 22 to 25 mph, with gusts as high as 39 mph. Chance of precipitation is 50%.

    Low: 58 °F

    Breezy.
    Mostly Cloudy
    then Chance
    T-storms

  • Thursday

    Thursday: A slight chance of showers and thunderstorms, then a chance of showers after 7am. Cloudy, then gradually becoming mostly sunny, with a high near 70. Breezy, with a south wind 18 to 20 mph becoming west in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 30%.

    High: 70 °F

    Breezy.
    Slight Chance
    T-storms then
    Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 36. West northwest wind around 18 mph, with gusts as high as 30 mph.

    Low: 36 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 51. West northwest wind 15 to 17 mph, with gusts as high as 25 mph.

    High: 51 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 33. West northwest wind 8 to 14 mph, with gusts as high as 23 mph.

    Low: 33 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 53. Southwest wind 8 to 13 mph, with gusts as high as 21 mph.

    High: 53 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers after 1am. Mostly cloudy, with a low around 38. South wind 5 to 10 mph becoming east southeast in the evening. Chance of precipitation is 20%.

    Low: 38 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 50. South southeast wind around 8 mph.
Wednesday
Mostly sunny, with a high near 85. Breezy, with a south southeast wind 14 to 22 mph, with gusts as high as 33 mph.
Wednesday Night
A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 58. Breezy, with a south wind 22 to 25 mph, with gusts as high as 39 mph. Chance of precipitation is 50%.
Thursday
A slight chance of showers and thunderstorms, then a chance of showers after 7am. Cloudy, then gradually becoming mostly sunny, with a high near 70. Breezy, with a south wind 18 to 20 mph becoming west in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 36. West northwest wind around 18 mph, with gusts as high as 30 mph.
Friday
Mostly sunny, with a high near 51. West northwest wind 15 to 17 mph, with gusts as high as 25 mph.
Friday Night
Partly cloudy, with a low around 33. West northwest wind 8 to 14 mph, with gusts as high as 23 mph.
Saturday
Partly sunny, with a high near 53. Southwest wind 8 to 13 mph, with gusts as high as 21 mph.
Saturday Night
A slight chance of showers after 1am. Mostly cloudy, with a low around 38. South wind 5 to 10 mph becoming east southeast in the evening. Chance of precipitation is 20%.
Sunday
A chance of showers. Mostly cloudy, with a high near 52. Chance of precipitation is 50%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 37. Chance of precipitation is 70%.
Monday
A chance of showers. Mostly cloudy, with a high near 47. Breezy. Chance of precipitation is 50%.
Monday Night
A slight chance of showers. Mostly cloudy, with a low around 33. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 51.
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:
2:36 am CDT Apr 22, 2026
Forecast Valid:
3am CDT Apr 22, 2026-6pm CDT Apr 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