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

Hazardous Weather Conditions

Current conditions at

Yankton, Chan Gurney Municipal Airport (KYKN)

Lat: 42.92°NLon: 97.38°WElev: 1306ft.

Fair

82°F

28°C

Humidity 55%
Wind Speed S 20 mph
Barometer 30.09 in (1019.4 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 17 Aug 12:56 pm CDT
Extended Forecast for

Yankton SD

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 85. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 85 °F

    Mostly Sunny

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly after 10pm. Mostly cloudy, with a low around 64. South southwest wind 5 to 10 mph.

    Low: 64 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms before 9am. Mostly cloudy, then gradually becoming sunny, with a high near 81. Southeast wind around 5 mph becoming west northwest in the afternoon.

    High: 81 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy during the early evening, then becoming cloudy, with a low around 61. North wind around 5 mph becoming calm.

    Low: 61 °F

    Becoming
    Cloudy

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 78. Calm wind becoming south southwest around 5 mph in the afternoon. Chance of precipitation is 60%.

    High: 78 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 4am, then a slight chance of showers. Partly cloudy, with a low around 59. South southeast wind around 5 mph. Chance of precipitation is 30%.

    Low: 59 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 85. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tonight
A 50 percent chance of showers and thunderstorms, mainly after 10pm. Mostly cloudy, with a low around 64. South southwest wind 5 to 10 mph.
Tuesday
A 20 percent chance of showers and thunderstorms before 9am. Mostly cloudy, then gradually becoming sunny, with a high near 81. Southeast wind around 5 mph becoming west northwest in the afternoon.
Tuesday Night
Partly cloudy during the early evening, then becoming cloudy, with a low around 61. North wind around 5 mph becoming calm.
Wednesday
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 78. Calm wind becoming south southwest around 5 mph in the afternoon. Chance of precipitation is 60%.
Wednesday Night
A chance of showers and thunderstorms before 4am, then a slight chance of showers. Partly cloudy, with a low around 59. South southeast wind around 5 mph. Chance of precipitation is 30%.
Thursday
Sunny, with a high near 83.
Thursday Night
Mostly clear, with a low around 63.
Friday
Mostly sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 61.
Saturday
Mostly sunny, with a high near 80.
Saturday Night
Partly cloudy, with a low around 59.
Sunday
Partly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Yankton SD
 42.88°N 97.4°W (Elev. 1204 ft)
Last Update:
1:33 pm CDT Aug 17, 2026
Forecast Valid:
1pm CDT Aug 17, 2026-6pm CDT Aug 23, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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