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

Above Average Temperatures in the West; Winter Weather Returns to the Upper Midwest and Great Lakes

Well above average temperatures will continue across the West this week, potentially breaking some daily high temperature records. A storm system dropping south out of Canada will bring a wintry mix to the Upper Midwest and Great Lakes Tuesday, pushing into the Central Appalachians and interior Northeast on Wednesday. Read More >

Current conditions at

Sisseton, Sisseton Municipal Airport (K8D3)

Lat: 45.67°NLon: 96.99°WElev: 1161ft.

45°F

7°C

Humidity 56%
Wind Speed SW 14 mph
Barometer 29.74 in (1008.4 mb)
Dewpoint 30°F (-1°C)
Visibility NA
Wind Chill39°F (4°C)
Last update 12 Jan 7:56 pm CST
Extended Forecast for

Grenville SD

  • Tonight

    Tonight: Mostly cloudy, with a low around 35. West wind 13 to 18 mph, with gusts as high as 30 mph.

    Low: 35 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of rain after 4pm, mixing with snow after 5pm. Partly sunny, with a high near 40. Breezy, with a west wind 18 to 23 mph, with gusts as high as 36 mph. Chance of precipitation is 20%.

    High: 40 °F

    Breezy.
    Partly Sunny
    then Slight
    Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: A slight chance of rain and snow before 11pm, then a slight chance of snow between 11pm and midnight. Mostly cloudy, with a low around 12. Blustery, with a north wind around 21 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.

    Low: 12 °F

    Blustery.
    Slight Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 20. North wind 13 to 18 mph decreasing to 6 to 11 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 20 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 14. North northwest wind 5 to 14 mph becoming south in the evening. Winds could gust as high as 22 mph.

    Low: 14 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of snow. Mostly cloudy, with a high near 36. Breezy, with a south southwest wind 15 to 23 mph becoming northwest in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 40%.

    High: 36 °F

    Chance Snow
    and Breezy

  • Thursday Night

    Thursday Night: Snow likely, mainly after midnight. Patchy blowing snow after midnight. Mostly cloudy, with a low around 14. Blustery, with a northwest wind 23 to 26 mph, with gusts as high as 38 mph. Chance of precipitation is 70%.

    Low: 14 °F

    Snow Likely
    and Patchy
    Blowing Snow

  • Friday

    Friday: Snow likely, mainly before noon. Areas of blowing snow. Mostly cloudy, with a high near 25. Blustery, with a north northwest wind 24 to 28 mph, with gusts as high as 43 mph. Chance of precipitation is 60%.

    High: 25 °F

    Snow Likely
    and Areas
    Blowing Snow

  • Friday Night

    Friday Night: A slight chance of snow. Patchy blowing snow before midnight. Mostly cloudy, with a low around 1. Blustery, with a north northwest wind 18 to 23 mph, with gusts as high as 36 mph. Chance of precipitation is 20%.

    Low: 1 °F

    Slight Chance
    Snow and
    Patchy
    Blowing Snow

Detailed Forecast

Tonight
Mostly cloudy, with a low around 35. West wind 13 to 18 mph, with gusts as high as 30 mph.
Tuesday
A slight chance of rain after 4pm, mixing with snow after 5pm. Partly sunny, with a high near 40. Breezy, with a west wind 18 to 23 mph, with gusts as high as 36 mph. Chance of precipitation is 20%.
Tuesday Night
A slight chance of rain and snow before 11pm, then a slight chance of snow between 11pm and midnight. Mostly cloudy, with a low around 12. Blustery, with a north wind around 21 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.
Wednesday
Sunny, with a high near 20. North wind 13 to 18 mph decreasing to 6 to 11 mph in the afternoon. Winds could gust as high as 28 mph.
Wednesday Night
Mostly cloudy, with a low around 14. North northwest wind 5 to 14 mph becoming south in the evening. Winds could gust as high as 22 mph.
Thursday
A chance of snow. Mostly cloudy, with a high near 36. Breezy, with a south southwest wind 15 to 23 mph becoming northwest in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 40%.
Thursday Night
Snow likely, mainly after midnight. Patchy blowing snow after midnight. Mostly cloudy, with a low around 14. Blustery, with a northwest wind 23 to 26 mph, with gusts as high as 38 mph. Chance of precipitation is 70%.
Friday
Snow likely, mainly before noon. Areas of blowing snow. Mostly cloudy, with a high near 25. Blustery, with a north northwest wind 24 to 28 mph, with gusts as high as 43 mph. Chance of precipitation is 60%.
Friday Night
A slight chance of snow. Patchy blowing snow before midnight. Mostly cloudy, with a low around 1. Blustery, with a north northwest wind 18 to 23 mph, with gusts as high as 36 mph. Chance of precipitation is 20%.
Saturday
Partly sunny, with a high near 12.
Saturday Night
Mostly cloudy, with a low around -2.
Sunday
Mostly sunny, with a high near 20.
Sunday Night
Mostly cloudy, with a low around 4.
M.L.King Day
Partly sunny, with a high near 20.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grenville SD
 45.46°N 97.4°W (Elev. 1821 ft)
Last Update:
7:37 pm CST Jan 12, 2026
Forecast Valid:
8pm CST Jan 12, 2026-6pm CST Jan 19, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation