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

Extremely Critical Fire Weather in the Central Plains; Active Pattern in the West

Gusty to high winds and low relative humidity will bring critical to extremely critical fire weather conditions to the central and southern Plains today into Wednesday. Use caution with any potential ignition sources. Two Pacific storms will impact the western U.S. into Wednesday with gusty winds, low elevation rain and heavy mountain snow. Read More >

Hazardous Weather Conditions

Current conditions at

Sisseton, Sisseton Municipal Airport (K8D3)

Lat: 45.67°NLon: 96.99°WElev: 1161ft.

Breezy

45°F

7°C

Humidity 68%
Wind Speed SE 21 G 30 mph
Barometer 29.52 in (1000.8 mb)
Dewpoint 35°F (2°C)
Visibility NA
Wind Chill37°F (3°C)
Last update 17 Feb 11:56 am CST
Extended Forecast for

Grenville SD

Wind Advisory February 18, 12:00am until February 18, 12:00pm
Click here for hazard details and duration
Wind Advisory

  • This Afternoon

    This Afternoon: A slight chance of rain before 3pm, then a chance of rain after 4pm. Mostly cloudy, with a high near 49. Breezy, with an east southeast wind 17 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 50%.

    High: 49 °F

    Chance Rain
    and Breezy

  • Tonight

    Tonight: Rain likely before 4am, then snow likely. Mostly cloudy, with a low around 30. Breezy, with an east southeast wind 16 to 26 mph becoming west after midnight. Winds could gust as high as 39 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 30 °F

    Breezy. Rain
    Likely then
    Rain/Snow
    Likely

  • Wednesday

    Wednesday: A chance of snow before 3pm. Patchy blowing snow between noon and 1pm. Partly sunny, with a high near 37. Breezy, with a west wind 20 to 29 mph, with gusts as high as 40 mph. Chance of precipitation is 50%.

    High: 37 °F

    Chance Snow
    and Patchy
    Blowing Snow

  • Wednesday Night

    Wednesday Night: A slight chance of snow before midnight. Mostly cloudy, with a low around 21. Northwest wind 15 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.

    Low: 21 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Thursday

    Thursday: A chance of snow. Mostly cloudy, with a high near 25. Blustery, with a north northwest wind 18 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.

    High: 25 °F

    Chance Snow
    and Blustery

  • Thursday Night

    Thursday Night: A chance of snow. Mostly cloudy, with a low around 12. Northwest wind 16 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 40%.

    Low: 12 °F

    Chance Snow

  • Friday

    Friday: A slight chance of snow before noon. Mostly cloudy, with a high near 20. Northwest wind 13 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    High: 20 °F

    Slight Chance
    Snow then
    Partly Sunny

  • Friday Night

    Friday Night: A slight chance of snow before midnight. Mostly cloudy, with a low around 9. Northwest wind 9 to 11 mph. Chance of precipitation is 20%.

    Low: 9 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 21. Northwest wind 9 to 13 mph.

    High: 21 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A slight chance of rain before 3pm, then a chance of rain after 4pm. Mostly cloudy, with a high near 49. Breezy, with an east southeast wind 17 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 50%.
Tonight
Rain likely before 4am, then snow likely. Mostly cloudy, with a low around 30. Breezy, with an east southeast wind 16 to 26 mph becoming west after midnight. Winds could gust as high as 39 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Wednesday
A chance of snow before 3pm. Patchy blowing snow between noon and 1pm. Partly sunny, with a high near 37. Breezy, with a west wind 20 to 29 mph, with gusts as high as 40 mph. Chance of precipitation is 50%.
Wednesday Night
A slight chance of snow before midnight. Mostly cloudy, with a low around 21. Northwest wind 15 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
Thursday
A chance of snow. Mostly cloudy, with a high near 25. Blustery, with a north northwest wind 18 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 12. Northwest wind 16 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 40%.
Friday
A slight chance of snow before noon. Mostly cloudy, with a high near 20. Northwest wind 13 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Friday Night
A slight chance of snow before midnight. Mostly cloudy, with a low around 9. Northwest wind 9 to 11 mph. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 21. Northwest wind 9 to 13 mph.
Saturday Night
Partly cloudy, with a low around 3.
Sunday
Mostly sunny, with a high near 18.
Sunday Night
Partly cloudy, with a low around 3.
Monday
Mostly sunny, with a high near 25.
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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:
12:31 pm CST Feb 17, 2026
Forecast Valid:
12pm CST Feb 17, 2026-6pm CST Feb 23, 2026
 
Forecast Discussion
 
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Additional Resources

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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