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.

59°F

15°C

Humidity 36%
Wind Speed SW 20 G 29 mph
Barometer 30.13 in (1020.8 mb)
Dewpoint 32°F (0°C)
Visibility NA
Last update 17 Oct 11:56 am CDT
Extended Forecast for

5 Miles SSE Grenville SD

  • This Afternoon

    This Afternoon: Sunny, with a high near 59. Breezy, with a south southwest wind 18 to 24 mph, with gusts as high as 32 mph.

    High: 59 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 47. South southwest wind 15 to 18 mph, with gusts as high as 31 mph.

    Low: 47 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 64. South southwest wind 5 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 45. Northeast wind 5 to 8 mph.

    Low: 45 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 57. East 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 6 mph becoming west northwest in the afternoon.

    High: 65 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 59. Breezy, with a south southwest wind 18 to 24 mph, with gusts as high as 32 mph.
Tonight
Mostly clear, with a low around 47. South southwest wind 15 to 18 mph, with gusts as high as 31 mph.
Sunday
Sunny, with a high near 64. South southwest wind 5 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 45. Northeast wind 5 to 8 mph.
Monday
Sunny, with a high near 57. East 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 6 mph becoming west northwest in the afternoon.
Wednesday Night
Mostly clear, with a low around 49.
Thursday
Sunny, with a high near 67.
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 69. Breezy. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Grenville SD
 45.4°N 97.37°W (Elev. 1801 ft)
Last Update:
11:06 am CDT Oct 17, 2026
Forecast Valid:
12pm CDT Oct 17, 2026-6pm CDT Oct 23, 2026
 
Forecast Discussion
 
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