Current conditions at

Yankton, Chan Gurney Municipal Airport (KYKN)

Lat: 42.92°NLon: 97.38°WElev: 1306ft.

Fair

89°F

32°C

Humidity 72%
Wind Speed S 14 mph
Barometer 29.83 in (1009.8 mb)
Dewpoint 79°F (26°C)
Visibility 10.00 mi
Heat Index104°F (40°C)
Last update 26 Jul 11:56 am CDT
Extended Forecast for

5 Miles W Mayfield SD

Extreme Heat Warning July 26, 12:33pm until July 26, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 26, 12:33pm until July 26, 09:00pm

    NOW until 9:00pm Sun

    Extreme Heat Warning

  • This Afternoon

    High: 102 °F

    Hot

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 11pm.  Partly cloudy, with a low around 75. South wind 5 to 10 mph becoming northwest after midnight.

    Low: 75 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Patchy smoke between 9am and 2pm. Mostly sunny and hot, with a high near 97. North northwest wind 5 to 10 mph becoming east northeast in the afternoon.

    High: 97 °F

    Patchy Smoke

  • Monday Night

    Monday Night: Increasing clouds, with a low around 72. East wind 5 to 10 mph.

    Low: 72 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, with a high near 93. Southeast wind around 5 mph.

    High: 93 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 70. South southeast wind 5 to 10 mph.

    Low: 70 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny and hot, with a high near 95.

    High: 95 °F

    Hot

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 102. Heat index values as high as 114. South wind around 15 mph, with gusts as high as 20 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 75. South wind 5 to 10 mph becoming northwest after midnight.
Monday
Patchy smoke between 9am and 2pm. Mostly sunny and hot, with a high near 97. North northwest wind 5 to 10 mph becoming east northeast in the afternoon.
Monday Night
Increasing clouds, with a low around 72. East wind 5 to 10 mph.
Tuesday
Partly sunny, with a high near 93. Southeast wind around 5 mph.
Tuesday Night
Partly cloudy, with a low around 70. South southeast wind 5 to 10 mph.
Wednesday
Mostly sunny and hot, with a high near 95.
Wednesday Night
Partly cloudy, with a low around 72.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 88.
Thursday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Friday
Mostly sunny, with a high near 86.
Friday Night
Mostly clear, with a low around 66.
Saturday
Mostly sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles W Mayfield SD
 43.08°N 97.4°W (Elev. 1302 ft)
11:08 am CDT Jul 26, 2026
12pm CDT Jul 26, 2026-6pm CDT Aug 1, 2026
 
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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