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

Storm Systems to Impact the Central and Eastern U.S. Through the Weekend

Two storm systems will track through the central and eastern U.S. today through this weekend with areas of gusty winds, rain and heavy snow. Severe thunderstorms and heavy to excessive rainfall is forecast today from the Lower Mississippi River Valley to the Tennessee Valley. Damaging winds, a few tornadoes, and areas of flooding are possible. Read More >

Current conditions at

Sisseton, Sisseton Municipal Airport (K8D3)

Lat: 45.67°NLon: 96.99°WElev: 1161ft.

35°F

2°C

Humidity 52%
Wind Speed W 13 mph
Barometer 30.07 in (1020.5 mb)
Dewpoint 19°F (-7°C)
Visibility NA
Wind Chill26°F (-3°C)
Last update 9 Jan 11:56 am CST
Extended Forecast for

Grenville SD

  • This Afternoon

    This Afternoon: A chance of flurries before 3pm, then a slight chance of snow between 3pm and 5pm, then a chance of flurries after 5pm. Mostly cloudy, with a high near 34. West southwest wind 7 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    High: 34 °F

    Slight Chance
    Snow

  • Tonight

    Tonight: A chance of flurries between midnight and 1am. Partly cloudy, with a low around 12. West northwest wind 11 to 15 mph, with gusts as high as 24 mph.

    Low: 12 °F

    Chance
    Flurries

  • Saturday

    Saturday: Mostly sunny, with a high near 16. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 31 mph.

    High: 16 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Blustery

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 7. Northwest wind 7 to 15 mph becoming west southwest after midnight. Winds could gust as high as 24 mph.

    Low: 7 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 32. Southwest wind 10 to 17 mph, with gusts as high as 29 mph.

    High: 32 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 28. West wind 13 to 16 mph, with gusts as high as 25 mph.

    Low: 28 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 41. West southwest wind 13 to 15 mph, with gusts as high as 25 mph.

    High: 41 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of rain after midnight. Mostly cloudy, with a low around 34. West wind 14 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    Low: 34 °F

    Mostly Cloudy
    then Chance
    Rain

  • Tuesday

    Tuesday: A chance of rain, mainly before noon. Mostly cloudy, with a high near 39. Northwest wind 16 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 30%.

    High: 39 °F

    Chance Rain

Detailed Forecast

This Afternoon
A chance of flurries before 3pm, then a slight chance of snow between 3pm and 5pm, then a chance of flurries after 5pm. Mostly cloudy, with a high near 34. West southwest wind 7 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Tonight
A chance of flurries between midnight and 1am. Partly cloudy, with a low around 12. West northwest wind 11 to 15 mph, with gusts as high as 24 mph.
Saturday
Mostly sunny, with a high near 16. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 31 mph.
Saturday Night
Partly cloudy, with a low around 7. Northwest wind 7 to 15 mph becoming west southwest after midnight. Winds could gust as high as 24 mph.
Sunday
Mostly sunny, with a high near 32. Southwest wind 10 to 17 mph, with gusts as high as 29 mph.
Sunday Night
Partly cloudy, with a low around 28. West wind 13 to 16 mph, with gusts as high as 25 mph.
Monday
Mostly sunny, with a high near 41. West southwest wind 13 to 15 mph, with gusts as high as 25 mph.
Monday Night
A chance of rain after midnight. Mostly cloudy, with a low around 34. West wind 14 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Tuesday
A chance of rain, mainly before noon. Mostly cloudy, with a high near 39. Northwest wind 16 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 30%.
Tuesday Night
A chance of rain and snow before midnight, then a slight chance of snow. Mostly cloudy, with a low around 21. Chance of precipitation is 30%.
Wednesday
Mostly cloudy, with a high near 30.
Wednesday Night
Mostly cloudy, with a low around 23.
Thursday
A chance of snow. Mostly cloudy, with a high near 35. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grenville SD
 45.46°N 97.4°W (Elev. 1821 ft)
Last Update:
12:36 pm CST Jan 9, 2026
Forecast Valid:
12pm CST Jan 9, 2026-6pm CST Jan 15, 2026
 
Forecast Discussion
 
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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