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.

Overcast

69°F

21°C

Humidity 87%
Wind Speed SE 12 mph
Barometer 29.99 in (1016.0 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 24 Aug 1:56 am CDT
Extended Forecast for

Yankton SD

  • Overnight

    Overnight: Showers and thunderstorms. Low around 63. Southeast wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    T-storms

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 83. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 83 °F

    Chance
    T-storms then
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 65. South southeast wind 5 to 10 mph.

    Low: 65 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms before 10am. Mostly cloudy, then gradually becoming sunny, with a high near 88. West wind 5 to 10 mph.

    High: 88 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 62. West wind 5 to 10 mph.

    Low: 62 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 85. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 85 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

Detailed Forecast

Overnight
Showers and thunderstorms. Low around 63. Southeast wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
A 30 percent chance of showers and thunderstorms, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 83. South wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 65. South southeast wind 5 to 10 mph.
Tuesday
A 20 percent chance of showers and thunderstorms before 10am. Mostly cloudy, then gradually becoming sunny, with a high near 88. West wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 62. West wind 5 to 10 mph.
Wednesday
Sunny, with a high near 85. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
Sunny, with a high near 85.
Thursday Night
Partly cloudy, with a low around 61.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 85. Chance of precipitation is 40%.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Saturday
Partly sunny, with a high near 87.
Saturday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Sunday
Mostly sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Yankton SD
 42.88°N 97.4°W (Elev. 1204 ft)
Last Update:
1:33 am CDT Aug 24, 2026
Forecast Valid:
2am CDT Aug 24, 2026-6pm CDT Aug 30, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation