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.

57°F

14°C

Humidity 64%
Wind Speed SE 10 mph
Barometer 29.64 in (1003.3 mb)
Dewpoint 45°F (7°C)
Visibility NA
Last update 16 Apr 8:56 am CDT
Extended Forecast for

Grenville SD

Red Flag Warning April 16, 11:00am until April 16, 08:00pm
Click here for hazard details and duration
Red Flag Warning

  • Today

    Today: Sunny, with a high near 76. Breezy, with a southwest wind 16 to 22 mph, with gusts as high as 33 mph.

    High: 76 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: A slight chance of showers between 8pm and 9pm. Increasing clouds, with a low around 31. Blustery, with a southwest wind 10 to 15 mph becoming north 16 to 21 mph after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 20%.

    Low: 31 °F

    Slight Chance
    Showers then
    Mostly Cloudy
    and Blustery

  • Friday

    Friday: A chance of rain or freezing rain before 10am, then a chance of snow showers between 10am and 1pm. Mostly cloudy, with a high near 39. Breezy, with a north northwest wind 20 to 23 mph, with gusts as high as 36 mph. Chance of precipitation is 40%.

    High: 39 °F

    Breezy.
    Chance Wintry
    Mix then
    Chance Snow
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 22. Blustery, with a northwest wind 18 to 24 mph, with gusts as high as 36 mph.

    Low: 22 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 39. Breezy, with a northwest wind 18 to 22 mph, with gusts as high as 33 mph.

    High: 39 °F

    Mostly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 25. Blustery, with a northwest wind 15 to 20 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 30 mph.

    Low: 25 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

  • Sunday

    Sunday: Sunny, with a high near 48. North northwest wind 6 to 9 mph.

    High: 48 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 33. Northeast wind 7 to 13 mph becoming southeast after midnight. Winds could gust as high as 21 mph.

    Low: 33 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 65. South southeast wind 13 to 17 mph, with gusts as high as 28 mph.

    High: 65 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 76. Breezy, with a southwest wind 16 to 22 mph, with gusts as high as 33 mph.
Tonight
A slight chance of showers between 8pm and 9pm. Increasing clouds, with a low around 31. Blustery, with a southwest wind 10 to 15 mph becoming north 16 to 21 mph after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 20%.
Friday
A chance of rain or freezing rain before 10am, then a chance of snow showers between 10am and 1pm. Mostly cloudy, with a high near 39. Breezy, with a north northwest wind 20 to 23 mph, with gusts as high as 36 mph. Chance of precipitation is 40%.
Friday Night
Mostly cloudy, with a low around 22. Blustery, with a northwest wind 18 to 24 mph, with gusts as high as 36 mph.
Saturday
Mostly sunny, with a high near 39. Breezy, with a northwest wind 18 to 22 mph, with gusts as high as 33 mph.
Saturday Night
Mostly clear, with a low around 25. Blustery, with a northwest wind 15 to 20 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 30 mph.
Sunday
Sunny, with a high near 48. North northwest wind 6 to 9 mph.
Sunday Night
Mostly clear, with a low around 33. Northeast wind 7 to 13 mph becoming southeast after midnight. Winds could gust as high as 21 mph.
Monday
Sunny, with a high near 65. South southeast wind 13 to 17 mph, with gusts as high as 28 mph.
Monday Night
Mostly clear, with a low around 43.
Tuesday
Sunny, with a high near 68.
Tuesday Night
Mostly clear, with a low around 46.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 68. 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:
Grenville SD
 45.46°N 97.4°W (Elev. 1821 ft)
Last Update:
9:37 am CDT Apr 16, 2026
Forecast Valid:
9am CDT Apr 16, 2026-6pm CDT Apr 22, 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