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

Flooding Risks from Tropical Moisture Across the Southeast and Southwest

Tropical moisture from Isaias and Rachel will impact portions of the Southeast and Southwest this weekend. Flash flooding, strong winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, strong winds and dry fuels are raising fire weather concerns across the central Great Basin and western High Plains. Across the northern Rockies, first winter storm of the season. Read More >

Current conditions at

Sisseton, Sisseton Municipal Airport (K8D3)

Lat: 45.67°NLon: 96.99°WElev: 1161ft.

56°F

13°C

Humidity 90%
Wind Speed NW 12 mph
Barometer 29.68 in (1003.3 mb)
Dewpoint 53°F (12°C)
Visibility NA
Last update 11 Oct 5:56 am CDT
Extended Forecast for

Webster SD

  • Today

    Today: Partly sunny, with a high near 71. Light north northeast wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 22 mph.

    High: 71 °F

    Partly Sunny

  • Tonight

    Tonight: Cloudy, with a low around 47. North wind 9 to 11 mph, with gusts as high as 22 mph.

    Low: 47 °F

    Cloudy

  • Columbus Day

    Columbus Day: A chance of showers or sprinkles before 2pm, then a chance of showers, mainly between 2pm and 5pm. Mostly cloudy, with a high near 63. North northeast wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

    High: 63 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of sprinkles before 7pm. Partly cloudy during the early evening, then becoming cloudy, with a low around 42. Northwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 42 °F

    Chance
    Sprinkles

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 57. Northwest wind around 9 mph.

    High: 57 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 39. North wind 3 to 6 mph.

    Low: 39 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 59. North northeast wind 3 to 8 mph.

    High: 59 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers, mainly after 1am. Partly cloudy, with a low around 41. East northeast wind around 6 mph. Chance of precipitation is 30%.

    Low: 41 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers. Mostly cloudy, with a high near 57. East wind 7 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 50%.

    High: 57 °F

    Chance
    Showers

Detailed Forecast

Today
Partly sunny, with a high near 71. Light north northeast wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 22 mph.
Tonight
Cloudy, with a low around 47. North wind 9 to 11 mph, with gusts as high as 22 mph.
Columbus Day
A chance of showers or sprinkles before 2pm, then a chance of showers, mainly between 2pm and 5pm. Mostly cloudy, with a high near 63. North northeast wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Monday Night
A chance of sprinkles before 7pm. Partly cloudy during the early evening, then becoming cloudy, with a low around 42. Northwest wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly cloudy, with a high near 57. Northwest wind around 9 mph.
Tuesday Night
Partly cloudy, with a low around 39. North wind 3 to 6 mph.
Wednesday
Mostly sunny, with a high near 59. North northeast wind 3 to 8 mph.
Wednesday Night
A chance of showers, mainly after 1am. Partly cloudy, with a low around 41. East northeast wind around 6 mph. Chance of precipitation is 30%.
Thursday
A chance of showers. Mostly cloudy, with a high near 57. East wind 7 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 50%.
Thursday Night
A slight chance of showers. Mostly cloudy, with a low around 37. Chance of precipitation is 20%.
Friday
Partly sunny, with a high near 50.
Friday Night
Widespread frost. Otherwise, mostly clear, with a low around 32.
Saturday
Widespread frost. Otherwise, sunny, with a high near 54.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Webster SD
 45.33°N 97.52°W (Elev. 1831 ft)
Last Update:
6:21 am CDT Oct 11, 2026
Forecast Valid:
6am CDT Oct 11, 2026-6pm CDT Oct 17, 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