Areas of Severe Thunderstorms and Excessive Rainfall through This Weekend

A multi-day thunderstorm and heavy rain event will impact the south-central U.S. this Memorial Day weekend. Severe thunderstorms may produce large hail, severe gusts, and a possible tornado or two across portions of the central and southern Plains through Monday. The threat for heavy to excessive rainfall and possible flash flooding will return to the south-central U.S., especially in the Ozarks. Read More >

Current conditions at

Sisseton, Sisseton Municipal Airport (K8D3)

Lat: 45.67°NLon: 96.99°WElev: 1161ft.

66°F

19°C

Humidity 37%
Wind Speed S 5 mph
Barometer 30.20 in (1022.4 mb)
Dewpoint 39°F (4°C)
Visibility NA
Last update 24 May 6:56 pm CDT
Extended Forecast for

Grenville SD

  • Tonight

    Tonight: A slight chance of showers before 9pm.  Mostly cloudy, with a low around 46. Calm wind becoming east around 5 mph.  Chance of precipitation is 20%.

    Low: 46 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 65. East wind 3 to 8 mph.

    High: 65 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 47. East wind around 7 mph.

    Low: 47 °F

    Partly Cloudy

  • Memorial Day

    Memorial Day: Partly sunny, with a high near 65. South southeast wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 65 °F

    Partly Sunny

  • Monday Night

    Monday Night: A chance of showers, mainly after 1am.  Mostly cloudy, with a low around 49. Southeast wind 6 to 10 mph.  Chance of precipitation is 30%.

    Low: 49 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers.  Mostly cloudy, with a high near 60. East wind 6 to 10 mph.  Chance of precipitation is 40%.

    High: 60 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers, mainly before 1am.  Mostly cloudy, with a low around 46. East wind 6 to 10 mph.  Chance of precipitation is 30%.

    Low: 46 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, mainly after 1pm.  Partly sunny, with a high near 62. East northeast wind 6 to 8 mph.  Chance of precipitation is 40%.

    High: 62 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers.  Partly cloudy, with a low around 47. Northeast wind 6 to 8 mph becoming southwest after midnight.  Chance of precipitation is 20%.

    Low: 47 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
A slight chance of showers before 9pm. Mostly cloudy, with a low around 46. Calm wind becoming east around 5 mph. Chance of precipitation is 20%.
Sunday
Mostly sunny, with a high near 65. East wind 3 to 8 mph.
Sunday Night
Partly cloudy, with a low around 47. East wind around 7 mph.
Memorial Day
Partly sunny, with a high near 65. South southeast wind 6 to 11 mph, with gusts as high as 20 mph.
Monday Night
A chance of showers, mainly after 1am. Mostly cloudy, with a low around 49. Southeast wind 6 to 10 mph. Chance of precipitation is 30%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 60. East wind 6 to 10 mph. Chance of precipitation is 40%.
Tuesday Night
A chance of showers, mainly before 1am. Mostly cloudy, with a low around 46. East wind 6 to 10 mph. Chance of precipitation is 30%.
Wednesday
A chance of showers, mainly after 1pm. Partly sunny, with a high near 62. East northeast wind 6 to 8 mph. Chance of precipitation is 40%.
Wednesday Night
A slight chance of showers. Partly cloudy, with a low around 47. Northeast wind 6 to 8 mph becoming southwest after midnight. Chance of precipitation is 20%.
Thursday
A chance of showers, mainly after 1pm. Mostly sunny, with a high near 68. Chance of precipitation is 30%.
Thursday Night
A slight chance of showers. Mostly clear, with a low around 50. Chance of precipitation is 20%.
Friday
A slight chance of showers. Sunny, with a high near 74. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 53.
Saturday
Sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
Grenville SD
 45.46°N 97.4°W (Elev. 1821 ft)
6:44 pm CDT May 24, 2025
7pm CDT May 24, 2025-6pm CDT May 31, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database