Current conditions at

Yankton, Chan Gurney Municipal Airport (KYKN)

Lat: 42.92°NLon: 97.38°WElev: 1306ft.

Fog/Mist

77°F

25°C

Humidity 90%
Wind Speed S 12 mph
Barometer 29.89 in (1012.5 mb)
Dewpoint 74°F (23°C)
Visibility 6.00 mi
Heat Index78°F (26°C)
Last update 25 Jul 8:56 am CDT
Extended Forecast for

8 Miles NNW Mayfield SD

Extreme Heat Warning July 25, 12:00pm until July 26, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  • Today

    Today: Mostly sunny and hot, with a high near 98. Heat index values as high as 105. Southwest wind 5 to 10 mph.

    High: 98 °F

    Hot

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly between 1am and 4am.  Mostly cloudy, with a low around 75. Southeast wind 10 to 15 mph becoming north northeast in the evening. Winds could gust as high as 25 mph.

    Low: 75 °F

    Chance
    T-storms

  • Sunday

    Sunday: A 10 percent chance of showers and thunderstorms before 7am.  Cloudy, then gradually becoming mostly sunny and hot, with a high near 97. Heat index values as high as 106. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 97 °F

    Slight Chance
    T-storms then
    Mostly Sunny
    and Breezy

  • Sunday Night

    Sunday Night: A chance of sprinkles before 1am.  Clear during the early evening, then becoming mostly cloudy, with a low around 75. South wind 10 to 15 mph becoming west northwest after midnight. Winds could gust as high as 25 mph.

    Low: 75 °F

    Chance
    Sprinkles

  • Monday

    Monday: Sunny and hot, with a high near 97. Northeast wind around 10 mph, with gusts as high as 20 mph.

    High: 97 °F

    Hot

  • Monday Night

    Monday Night: A chance of sprinkles after 1am.  Increasing clouds, with a low around 73. East wind 5 to 10 mph.

    Low: 73 °F

    Chance
    Sprinkles

  • Tuesday

    Tuesday: Mostly sunny, with a high near 93.

    High: 93 °F

    Mostly Sunny

  • Tuesday Night

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

    Low: 69 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 94.

    High: 94 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny and hot, with a high near 98. Heat index values as high as 105. Southwest wind 5 to 10 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly between 1am and 4am. Mostly cloudy, with a low around 75. Southeast wind 10 to 15 mph becoming north northeast in the evening. Winds could gust as high as 25 mph.
Sunday
A 10 percent chance of showers and thunderstorms before 7am. Cloudy, then gradually becoming mostly sunny and hot, with a high near 97. Heat index values as high as 106. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph.
Sunday Night
A chance of sprinkles before 1am. Clear during the early evening, then becoming mostly cloudy, with a low around 75. South wind 10 to 15 mph becoming west northwest after midnight. Winds could gust as high as 25 mph.
Monday
Sunny and hot, with a high near 97. Northeast wind around 10 mph, with gusts as high as 20 mph.
Monday Night
A chance of sprinkles after 1am. Increasing clouds, with a low around 73. East wind 5 to 10 mph.
Tuesday
Mostly sunny, with a high near 93.
Tuesday Night
Mostly clear, with a low around 69.
Wednesday
Mostly sunny, with a high near 94.
Wednesday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 70.
Friday
Mostly sunny, with a high near 91.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles NNW Mayfield SD
 43.18°N 97.4°W (Elev. 1486 ft)
8:38 am CDT Jul 25, 2026
9am CDT Jul 25, 2026-6pm CDT Jul 31, 2026
 
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