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

Yankton, Chan Gurney Municipal Airport (KYKN)

Lat: 42.92°NLon: 97.38°WElev: 1306ft.

Overcast

56°F

13°C

Humidity 93%
Wind Speed NE 8 mph
Barometer 30.20 in (1024.0 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 21 Sep 7:56 pm CDT
Extended Forecast for

Yankton SD

  • Tonight

    Tonight: A slight chance of drizzle before 9pm, then a slight chance of drizzle after midnight. Patchy fog before 10pm, then patchy fog after 11pm. Otherwise, cloudy, with a low around 53. East northeast wind 5 to 10 mph.

    Low: 53 °F

    Slight Chance
    Drizzle and
    Patchy Fog

  • Tuesday

    Tuesday: A slight chance of drizzle before 8am. Areas of fog before noon. Otherwise, cloudy, with a high near 62. East southeast wind 5 to 10 mph.

    High: 62 °F

    Slight Chance
    Drizzle and
    Areas Fog
    then Mostly
    Cloudy

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 52. Southeast wind around 10 mph.

    Low: 52 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 66. Southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 66 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 1am, then showers and possibly a thunderstorm between 1am and 4am, then showers after 4am. Low around 55. Southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.

    Low: 55 °F

    Chance
    Showers then
    Showers

  • Thursday

    Thursday: A 50 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 70. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 70 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 56.

    Low: 56 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: A chance of showers before 1pm, then a chance of drizzle after 1pm. Mostly cloudy, with a high near 68. Chance of precipitation is 50%.

    High: 68 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of drizzle, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 58. Chance of precipitation is 60%.

    Low: 58 °F

    Chance
    Drizzle then
    Showers
    Likely

Detailed Forecast

Tonight
A slight chance of drizzle before 9pm, then a slight chance of drizzle after midnight. Patchy fog before 10pm, then patchy fog after 11pm. Otherwise, cloudy, with a low around 53. East northeast wind 5 to 10 mph.
Tuesday
A slight chance of drizzle before 8am. Areas of fog before noon. Otherwise, cloudy, with a high near 62. East southeast wind 5 to 10 mph.
Tuesday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 52. Southeast wind around 10 mph.
Wednesday
A 30 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 66. Southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
A chance of showers and thunderstorms before 1am, then showers and possibly a thunderstorm between 1am and 4am, then showers after 4am. Low around 55. Southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
Thursday
A 50 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 70. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 56.
Friday
A chance of showers before 1pm, then a chance of drizzle after 1pm. Mostly cloudy, with a high near 68. Chance of precipitation is 50%.
Friday Night
A chance of drizzle, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 58. Chance of precipitation is 60%.
Saturday
A 40 percent chance of showers before 1pm. Mostly cloudy, with a high near 73.
Saturday Night
Mostly cloudy, with a low around 59.
Sunday
Partly sunny, with a high near 74.
Sunday Night
Partly cloudy, with a low around 59.
Monday
A 40 percent chance of showers. Partly sunny, with a high near 74.
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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:
7:58 pm CDT Sep 21, 2026
Forecast Valid:
8pm CDT Sep 21, 2026-6pm CDT Sep 28, 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