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

65°F

18°C

Humidity 97%
Wind Speed N 5 mph
Barometer 29.86 in (1011.4 mb)
Dewpoint 64°F (18°C)
Visibility 7.00 mi
Last update 9 Jun 4:56 am CDT
Extended Forecast for

Yankton SD

Heat Advisory June 9, 01:00pm until June 9, 09:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Mostly sunny and hot, with a high near 99. Heat index values as high as 104. Breezy, with a south southeast wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 99 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly between 3am and 4am. Increasing clouds, with a low around 73. Breezy, with a south southeast wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph.

    Low: 73 °F

    Chance
    T-storms and
    Breezy

  • Wednesday

    Wednesday: Sunny, with a high near 94. Breezy, with a south wind 10 to 20 mph becoming west northwest in the afternoon. Winds could gust as high as 30 mph.

    High: 94 °F

    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 62. West northwest wind 5 to 15 mph becoming east northeast after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 30%.

    Low: 62 °F

    Mostly Clear
    then Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 84. Breezy, with a west northwest wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 35 mph. Chance of precipitation is 20%.

    High: 84 °F

    Breezy.
    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58. Breezy, with a west northwest wind 15 to 20 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 30 mph.

    Low: 58 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Friday

    Friday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny
    then Chance
    Showers

Detailed Forecast

Today
Mostly sunny and hot, with a high near 99. Heat index values as high as 104. Breezy, with a south southeast wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Tonight
A 50 percent chance of showers and thunderstorms, mainly between 3am and 4am. Increasing clouds, with a low around 73. Breezy, with a south southeast wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph.
Wednesday
Sunny, with a high near 94. Breezy, with a south wind 10 to 20 mph becoming west northwest in the afternoon. Winds could gust as high as 30 mph.
Wednesday Night
A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 62. West northwest wind 5 to 15 mph becoming east northeast after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 30%.
Thursday
A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 84. Breezy, with a west northwest wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 35 mph. Chance of precipitation is 20%.
Thursday Night
Mostly clear, with a low around 58. Breezy, with a west northwest wind 15 to 20 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 30 mph.
Friday
Sunny, with a high near 91.
Friday Night
Mostly clear, with a low around 61.
Saturday
A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 87.
Saturday Night
Partly cloudy, with a low around 56.
Sunday
Partly sunny, with a high near 79.
Sunday Night
Partly cloudy, with a low around 53.
Monday
Mostly sunny, with a high near 80.
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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:
4:08 am CDT Jun 9, 2026
Forecast Valid:
5am CDT Jun 9, 2026-6pm CDT Jun 15, 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