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

78°F

26°C

Humidity 87%
Wind Speed NE 8 mph
Barometer 29.86 in (1011.2 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 12 Aug 10:56 pm CDT
Extended Forecast for

Yankton SD

  • Tonight

    Tonight: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2am. Some of the storms could produce heavy rainfall. Patchy smoke before 2am. Low around 67. East wind around 10 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    Low: 67 °F

    Slight Chance
    T-storms then
    Heavy Rain

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly before 9am. Mostly cloudy, with a high near 76. East northeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 76 °F

    Showers
    Likely then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms, mainly after midnight. Mostly cloudy, with a low around 64. East northeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 64 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms before 1pm. Cloudy, with a high near 77. East northeast wind 5 to 10 mph.

    High: 77 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 65. East wind around 5 mph.

    Low: 65 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 80. Calm wind becoming north northwest around 5 mph in the morning. Chance of precipitation is 70%.

    High: 80 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.

    Low: 63 °F

    Showers
    Likely

  • Sunday

    Sunday: Mostly cloudy, with a high near 77.

    High: 77 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

Detailed Forecast

Tonight
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2am. Some of the storms could produce heavy rainfall. Patchy smoke before 2am. Low around 67. East wind around 10 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Thursday
Showers and thunderstorms likely, mainly before 9am. Mostly cloudy, with a high near 76. East northeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
A 50 percent chance of showers and thunderstorms, mainly after midnight. Mostly cloudy, with a low around 64. East northeast wind 5 to 15 mph, with gusts as high as 20 mph.
Friday
A 30 percent chance of showers and thunderstorms before 1pm. Cloudy, with a high near 77. East northeast wind 5 to 10 mph.
Friday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 65. East wind around 5 mph.
Saturday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 80. Calm wind becoming north northwest around 5 mph in the morning. Chance of precipitation is 70%.
Saturday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Sunday
Mostly cloudy, with a high near 77.
Sunday Night
Partly cloudy, with a low around 58.
Monday
Partly sunny, with a high near 77.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 60.
Tuesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 80.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62.
Wednesday
Mostly sunny, with a high near 81.
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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:
10:23 pm CDT Aug 12, 2026
Forecast Valid:
10pm CDT Aug 12, 2026-6pm CDT Aug 19, 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