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 and Breezy

89°F

32°C

Humidity 48%
Wind Speed S 23 G 38 mph
Barometer 29.46 in (997.1 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 20 Jun 11:56 pm CDT
Extended Forecast for

Avon SD

Extreme Heat Warning June 21, 12:09am until June 22, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning June 21, 12:09am until June 22, 09:00pm

    NOW until 9:00pm Sun

    Extreme Heat Warning

  • Overnight

    Low: 77 °F

    Mostly Clear
    and Breezy

  • Saturday

    Saturday: Sunny and hot, with a high near 106. South southwest wind around 15 mph, with gusts as high as 30 mph.

    High: 106 °F

    Hot

  • Saturday Night

    Saturday 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
    then Mostly
    Clear and
    Breezy

  • Sunday

    Sunday: Sunny and hot, with a high near 100. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 100 °F

    Hot and
    Breezy

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely, mainly before 1am. Increasing clouds, with a low around 64. West southwest wind around 15 mph becoming north northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 60%.

    Low: 64 °F

    T-storms
    Likely

  • Monday

    Monday: A slight chance of thunderstorms before 7am. Cloudy through mid morning, then gradual clearing, with a high near 79. North northwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 10%.

    High: 79 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy
    then Chance
    T-storms

  • Tuesday

    Tuesday: Showers likely, with thunderstorms also possible after 1pm. Cloudy, with a high near 74. Chance of precipitation is 70%.

    High: 74 °F

    Showers
    Likely

Detailed Forecast

Overnight
Mostly clear, with a low around 77. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.
Saturday
Sunny and hot, with a high near 106. South southwest wind around 15 mph, with gusts as high as 30 mph.
Saturday Night
Mostly clear, with a low around 79. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday
Sunny and hot, with a high near 100. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Showers and thunderstorms likely, mainly before 1am. Increasing clouds, with a low around 64. West southwest wind around 15 mph becoming north northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 60%.
Monday
A slight chance of thunderstorms before 7am. Cloudy through mid morning, then gradual clearing, with a high near 79. North northwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 10%.
Monday Night
A 50 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 60.
Tuesday
Showers likely, with thunderstorms also possible after 1pm. Cloudy, with a high near 74. Chance of precipitation is 70%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 63. Chance of precipitation is 90%.
Wednesday
Showers. High near 76. Chance of precipitation is 80%.
Wednesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 63. Chance of precipitation is 70%.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79.
Thursday Night
Partly cloudy, with a low around 61.
Friday
Mostly sunny, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Avon SD
 43°N 98.05°W (Elev. 1647 ft)
Last Update:
11:05 pm CDT Jun 20, 2025
Forecast Valid:
12am CDT Jun 21, 2025-6pm CDT Jun 27, 2025
 
Forecast Discussion
 
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Additional Resources

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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