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Hazardous Weather Conditions

Current conditions at

Yankton, Chan Gurney Municipal Airport (KYKN)

Lat: 42.92°NLon: 97.38°WElev: 1306ft.

Fair

96°F

36°C

Humidity 58%
Wind Speed S 9 mph
Barometer 29.88 in (1011.4 mb)
Dewpoint 79°F (26°C)
Visibility 10.00 mi
Heat Index114°F (46°C)
Last update 25 Jul 2:56 pm CDT
Extended Forecast for

Yankton SD

Extreme Heat Warning July 25, 03:23pm until July 26, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 25, 03:23pm until July 26, 08:00pm

    NOW until 8:00pm Sun

    Extreme Heat Warning

  • This Afternoon

    High: 100 °F

    Hot

  • Tonight

    Tonight: A slight chance of showers and thunderstorms between 9pm and midnight. Some of the storms could be severe. Increasing clouds, with a low around 76. South southeast wind 5 to 10 mph becoming north in the evening. Chance of precipitation is 20%.

    Low: 76 °F

    Severe
    Thunderstorms
    then Cloudy

  • Sunday

    Sunday: Cloudy through mid morning, then gradual clearing and hot, with a high near 101. Heat index values as high as 114. South wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 101 °F

    Hot

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms, mainly between 11pm and midnight. Partly cloudy, with a low around 75. South wind 5 to 15 mph becoming west after midnight. Winds could gust as high as 20 mph.

    Low: 75 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 98. North northwest wind 5 to 10 mph becoming east northeast in the afternoon.

    High: 98 °F

    Hot

  • Monday Night

    Monday Night: Increasing clouds, with a low around 72. East northeast wind around 5 mph.

    Low: 72 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly sunny, with a high near 94.

    High: 94 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Mostly sunny and hot, with a high near 100. Heat index values as high as 115. Southeast wind around 5 mph.
Tonight
A slight chance of showers and thunderstorms between 9pm and midnight. Some of the storms could be severe. Increasing clouds, with a low around 76. South southeast wind 5 to 10 mph becoming north in the evening. Chance of precipitation is 20%.
Sunday
Cloudy through mid morning, then gradual clearing and hot, with a high near 101. Heat index values as high as 114. South wind 5 to 15 mph, with gusts as high as 25 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms, mainly between 11pm and midnight. Partly cloudy, with a low around 75. South wind 5 to 15 mph becoming west after midnight. Winds could gust as high as 20 mph.
Monday
Sunny and hot, with a high near 98. North northwest wind 5 to 10 mph becoming east northeast in the afternoon.
Monday Night
Increasing clouds, with a low around 72. East northeast wind around 5 mph.
Tuesday
Mostly sunny, with a high near 94.
Tuesday Night
Mostly clear, with a low around 69.
Wednesday
Mostly sunny and hot, with a high near 95.
Wednesday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 93.
Thursday Night
Showers likely. Partly cloudy, with a low around 69. Chance of precipitation is 60%.
Friday
Mostly sunny, with a high near 91.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Yankton SD
 42.9°N 97.4°W (Elev. 1250 ft)
Last Update:
3:13 pm CDT Jul 25, 2026
Forecast Valid:
3pm CDT Jul 25, 2026-6pm CDT Jul 31, 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