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

Late January Extreme Cold; Watching for Another East Coast Storm Threat This Weekend

Well below normal temperatures will continue for the eastern half of the Lower 48 this week. Another blast of arctic air will spread from the Plains through the East/Southeast Friday into Saturday with more record lows expected even into Florida. Forecasts are being monitored for increasing potential of another significant winter storm to impact the eastern United States this coming weekend. Read More >

Current conditions at

Sisseton, Sisseton Municipal Airport (K8D3)

Lat: 45.67°NLon: 96.99°WElev: 1161ft.

10°F

-12°C

Humidity 58%
Wind Speed NW 12 mph
Barometer 30.31 in (1031.0 mb)
Dewpoint -2°F (-19°C)
Visibility NA
Wind Chill-5°F (-21°C)
Last update 27 Jan 2:56 pm CST
Extended Forecast for

Grenville SD

  • This Afternoon

    This Afternoon: Sunny and cold, with a high near 8. West wind 9 to 11 mph.

    High: 8 °F

    Cold

  • Tonight

    Tonight: Partly cloudy, with a low around -2. West northwest wind around 10 mph.

    Low: -2 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny and cold, with a high near 7. Northwest wind 6 to 9 mph.

    High: 7 °F

    Cold

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around -6. North wind around 6 mph.

    Low: -6 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny and cold, with a high near 7. North wind 5 to 8 mph.

    High: 7 °F

    Cold

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -11. North northeast wind 6 to 8 mph.

    Low: -11 °F

    Partly Cloudy

  • Friday

    Friday: Sunny and cold, with a high near 3. North northeast wind around 7 mph.

    High: 3 °F

    Cold

  • Friday Night

    Friday Night: Mostly clear, with a low around -8. North northeast wind 6 to 13 mph becoming south southwest in the evening.

    Low: -8 °F

    Mostly Clear

  • Saturday

    Saturday: A chance of snow after noon. Mostly sunny, with a high near 20. Breezy, with a south wind 14 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 40%.

    High: 20 °F

    Mostly Sunny
    then Chance
    Snow and
    Breezy

Detailed Forecast

This Afternoon
Sunny and cold, with a high near 8. West wind 9 to 11 mph.
Tonight
Partly cloudy, with a low around -2. West northwest wind around 10 mph.
Wednesday
Mostly sunny and cold, with a high near 7. Northwest wind 6 to 9 mph.
Wednesday Night
Partly cloudy, with a low around -6. North wind around 6 mph.
Thursday
Mostly sunny and cold, with a high near 7. North wind 5 to 8 mph.
Thursday Night
Partly cloudy, with a low around -11. North northeast wind 6 to 8 mph.
Friday
Sunny and cold, with a high near 3. North northeast wind around 7 mph.
Friday Night
Mostly clear, with a low around -8. North northeast wind 6 to 13 mph becoming south southwest in the evening.
Saturday
A chance of snow after noon. Mostly sunny, with a high near 20. Breezy, with a south wind 14 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 40%.
Saturday Night
Snow likely, mainly before midnight. Mostly cloudy, with a low around 13. Chance of precipitation is 60%.
Sunday
A chance of snow. Mostly cloudy, with a high near 27. Chance of precipitation is 30%.
Sunday Night
Mostly cloudy, with a low around 9.
Monday
Partly sunny, with a high near 21.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grenville SD
 45.46°N 97.37°W (Elev. 1795 ft)
Last Update:
3:37 pm CST Jan 27, 2026
Forecast Valid:
3pm CST Jan 27, 2026-6pm CST Feb 2, 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