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

Severe Weather and Heavy Rain from the Ohio Valley to the Mid-Atlantic; Heat Persists in the South-Central U.S.

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected across portions of the Ohio Valley into southern Mid-Atlantic and Carolinas. Rounds of strong thunderstorms are expected to develop across the northern and central Plains. Sweltering heat remains most persistent across the South-Central Plains and Lower/Middle Mississippi Valley through next week. Read More >

Hazardous Weather Conditions

Current conditions at

Sisseton, Sisseton Municipal Airport (K8D3)

Lat: 45.67°NLon: 96.99°WElev: 1161ft.

76°F

24°C

Humidity 72%
Wind Speed SE 10 mph
Barometer 29.98 in (1013.3 mb)
Dewpoint 66°F (19°C)
Visibility NA
Heat Index78°F (26°C)
Last update 5 Sep 11:56 am CDT
Extended Forecast for

Webster SD

  • This Afternoon

    This Afternoon: Sunny, with a high near 89. Southeast wind 10 to 14 mph, with gusts as high as 26 mph.

    High: 89 °F

    Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly after 5am. Increasing clouds, with a low around 68. East southeast wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

    Low: 68 °F

    Mostly Clear
    then Chance
    Showers

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly before 11am. Partly sunny, with a high near 83. South southeast wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Showers
    Likely then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms after 8pm. Increasing clouds, with a low around 67. South southeast wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.

    Low: 67 °F

    Chance
    Showers then
    Chance
    T-storms

  • Labor Day

    Labor Day: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 82. South wind 14 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 69. Breezy, with a south southeast wind 15 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 50%.

    Low: 69 °F

    Chance
    T-storms and
    Breezy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80. South southwest wind 13 to 15 mph becoming west in the afternoon. Winds could gust as high as 26 mph.

    High: 80 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 58. West northwest wind 8 to 10 mph, with gusts as high as 21 mph.

    Low: 58 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 74. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 74 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 89. Southeast wind 10 to 14 mph, with gusts as high as 26 mph.
Tonight
A chance of showers and thunderstorms, mainly after 5am. Increasing clouds, with a low around 68. East southeast wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Sunday
Showers and thunderstorms likely, mainly before 11am. Partly sunny, with a high near 83. South southeast wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers and thunderstorms after 8pm. Increasing clouds, with a low around 67. South southeast wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.
Labor Day
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 82. South wind 14 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
A chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 69. Breezy, with a south southeast wind 15 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 50%.
Tuesday
Mostly sunny, with a high near 80. South southwest wind 13 to 15 mph becoming west in the afternoon. Winds could gust as high as 26 mph.
Tuesday Night
Mostly clear, with a low around 58. West northwest wind 8 to 10 mph, with gusts as high as 21 mph.
Wednesday
Sunny, with a high near 74. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Partly cloudy, with a low around 55.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
Partly cloudy, with a low around 59.
Friday
Mostly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Webster SD
 45.33°N 97.52°W (Elev. 1831 ft)
Last Update:
12:21 pm CDT Sep 5, 2026
Forecast Valid:
12pm CDT Sep 5, 2026-6pm CDT Sep 11, 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