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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Hazardous Weather Conditions

Current conditions at

Sisseton, Sisseton Municipal Airport (K8D3)

Lat: 45.67°NLon: 96.99°WElev: 1161ft.

75°F

24°C

Humidity 69%
Wind Speed SE 12 mph
Barometer 30.00 in (1015.2 mb)
Dewpoint 64°F (18°C)
Visibility NA
Last update 28 Aug 1:56 pm CDT
Extended Forecast for

Webster SDSimilar City Names

  • This Afternoon

    This Afternoon: A slight chance of showers. Partly sunny, with a high near 81. South southeast wind around 11 mph. Chance of precipitation is 20%.

    High: 81 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Showers and thunderstorms likely before 4am, then a chance of showers. Partly cloudy during the early evening, then becoming cloudy, with a low around 66. South southeast wind 10 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: A slight chance of showers before 7am. Mostly sunny, with a high near 82. Southeast wind 6 to 8 mph. Chance of precipitation is 10%.

    High: 82 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, mainly after 4am. Increasing clouds, with a low around 66. East wind 6 to 8 mph. Chance of precipitation is 30%.

    Low: 66 °F

    Partly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 84. East wind 9 to 11 mph, with gusts as high as 21 mph.

    High: 84 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 66. East southeast wind around 8 mph becoming west after midnight. Chance of precipitation is 20%.

    Low: 66 °F

    Slight Chance
    T-storms

  • Monday

    Monday: Mostly sunny, with a high near 81. Northwest wind 7 to 10 mph.

    High: 81 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 63. West wind around 5 mph becoming east after midnight.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 81. East southeast wind 5 to 7 mph. Chance of precipitation is 30%.

    High: 81 °F

    Mostly Sunny
    then Chance
    Showers

Detailed Forecast

This Afternoon
A slight chance of showers. Partly sunny, with a high near 81. South southeast wind around 11 mph. Chance of precipitation is 20%.
Tonight
Showers and thunderstorms likely before 4am, then a chance of showers. Partly cloudy during the early evening, then becoming cloudy, with a low around 66. South southeast wind 10 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
A slight chance of showers before 7am. Mostly sunny, with a high near 82. Southeast wind 6 to 8 mph. Chance of precipitation is 10%.
Saturday Night
A chance of showers and thunderstorms, mainly after 4am. Increasing clouds, with a low around 66. East wind 6 to 8 mph. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 84. East wind 9 to 11 mph, with gusts as high as 21 mph.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 66. East southeast wind around 8 mph becoming west after midnight. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 81. Northwest wind 7 to 10 mph.
Monday Night
Partly cloudy, with a low around 63. West wind around 5 mph becoming east after midnight.
Tuesday
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 81. East southeast wind 5 to 7 mph. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 63. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 83.
Wednesday Night
A slight chance of showers. Partly cloudy, with a low around 66. Chance of precipitation is 20%.
Thursday
A slight chance of showers. Mostly sunny, with a high near 83. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
Webster SDSimilar City Names
 45.33°N 97.52°W (Elev. 1831 ft)
Last Update:
2:06 pm CDT Aug 28, 2026
Forecast Valid:
2pm CDT Aug 28, 2026-6pm CDT Sep 3, 2026
 
Forecast Discussion
 
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