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

93°F

34°C

Humidity 28%
Wind Speed S 20 G 24 mph
Barometer 29.81 in (1009.6 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 19 Jun 4:56 pm CDT
Extended Forecast for

3 Miles SSE Avon SD

Extreme Heat Warning June 20, 12:00pm until June 22, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning

  • Tonight

    Tonight: Isolated showers and thunderstorms between 8pm and 9pm. Mostly clear, with a low around 71. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    Low: 71 °F

    Isolated
    T-storms then
    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 101. Heat index values as high as 106. Breezy, with a south wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 101 °F

    Sunny then
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 79. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 79 °F

    Mostly Clear
    and Breezy

  • Saturday

    Saturday: Sunny and hot, with a high near 105. South southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 105 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 81. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 81 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 100. Breezy, with a south wind 20 to 25 mph, with gusts as high as 35 mph.

    High: 100 °F

    Hot and
    Breezy

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 64. Breezy. Chance of precipitation is 60%.

    Low: 64 °F

    Chance
    T-storms and
    Breezy then
    Showers
    Likely

  • Monday

    Monday: A 30 percent chance of showers. Partly sunny, with a high near 78.

    High: 78 °F

    Chance
    Showers

  • Monday Night

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

    Low: 60 °F

    Showers
    Likely

Detailed Forecast

Tonight
Isolated showers and thunderstorms between 8pm and 9pm. Mostly clear, with a low around 71. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Friday
Sunny and hot, with a high near 101. Heat index values as high as 106. Breezy, with a south wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Friday Night
Mostly clear, with a low around 79. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.
Saturday
Sunny and hot, with a high near 105. South southwest wind around 15 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 81. South wind around 15 mph, with gusts as high as 25 mph.
Sunday
Sunny and hot, with a high near 100. Breezy, with a south wind 20 to 25 mph, with gusts as high as 35 mph.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 64. Breezy. Chance of precipitation is 60%.
Monday
A 30 percent chance of showers. Partly sunny, with a high near 78.
Monday Night
A chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Tuesday
Showers likely, with thunderstorms also possible after 1pm. Cloudy, with a high near 72. Chance of precipitation is 70%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 62. Chance of precipitation is 80%.
Wednesday
Showers likely. Mostly cloudy, with a high near 79. Chance of precipitation is 60%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Thursday
A 40 percent chance of showers. Mostly cloudy, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Avon SD
 42.96°N 98.02°W (Elev. 1499 ft)
Last Update:
4:31 pm CDT Jun 19, 2025
Forecast Valid:
5pm CDT Jun 19, 2025-6pm CDT Jun 26, 2025
 
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