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

Autumn Temperatures for Eastern Third of the Country; Super Typhoon Approaching Guam

Cooler and less humid conditions for the eastern third of the nation as a cold slides off the east coast. Combination of dry and breezy conditions may result in spread of wildfires across the lower Mississippi Valley. In addition, fire weather conditions linger into portions of Southern California. For Guam, a super typhoon is approaching. Read More >

Current conditions at

Sisseton, Sisseton Municipal Airport (K8D3)

Lat: 45.67°NLon: 96.99°WElev: 1161ft.

65°F

18°C

Humidity 32%
Wind Speed S 16 G 24 mph
Barometer 29.99 in (1015.3 mb)
Dewpoint 34°F (1°C)
Visibility NA
Last update 17 Oct 5:56 pm CDT
Extended Forecast for

4 Miles SE Grenville SD

  • Tonight

    Tonight: Mostly clear, with a low around 47. Breezy, with a south southwest wind 16 to 21 mph, with gusts as high as 32 mph.

    Low: 47 °F

    Clear and
    Breezy then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 64. South southwest wind 6 to 13 mph becoming north northeast in the afternoon. Winds could gust as high as 21 mph.

    High: 64 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 44. Northeast wind 5 to 8 mph.

    Low: 44 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 57. East northeast wind 8 to 10 mph, with gusts as high as 21 mph.

    High: 57 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 46. South southeast wind around 8 mph.

    Low: 46 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 63. South wind 9 to 13 mph, with gusts as high as 25 mph.

    High: 63 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 50. South southeast wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 50 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 65. South wind around 7 mph becoming west northwest in the afternoon.

    High: 65 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 48. North northeast wind around 6 mph.

    Low: 48 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 47. Breezy, with a south southwest wind 16 to 21 mph, with gusts as high as 32 mph.
Sunday
Sunny, with a high near 64. South southwest wind 6 to 13 mph becoming north northeast in the afternoon. Winds could gust as high as 21 mph.
Sunday Night
Mostly clear, with a low around 44. Northeast wind 5 to 8 mph.
Monday
Sunny, with a high near 57. East northeast wind 8 to 10 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 46. South southeast wind around 8 mph.
Tuesday
Sunny, with a high near 63. South wind 9 to 13 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly clear, with a low around 50. South southeast wind 8 to 10 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 65. South wind around 7 mph becoming west northwest in the afternoon.
Wednesday Night
Mostly clear, with a low around 48. North northeast wind around 6 mph.
Thursday
Sunny, with a high near 68.
Thursday Night
A slight chance of showers. Partly cloudy, with a low around 56. Chance of precipitation is 20%.
Friday
A chance of showers. Partly sunny, with a high near 70. Breezy. Chance of precipitation is 30%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 57. Chance of precipitation is 40%.
Saturday
A chance of showers. Partly sunny, with a high near 64. Chance of precipitation is 40%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SE Grenville SD
 45.44°N 97.34°W (Elev. 1791 ft)
Last Update:
6:21 pm CDT Oct 17, 2026
Forecast Valid:
6pm CDT Oct 17, 2026-6pm CDT Oct 24, 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