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.

A Few Clouds

76°F

24°C

Humidity 60%
Wind Speed NW 10 mph
Barometer 29.91 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 18 Jun 4:56 pm CDT
Extended Forecast for

4 Miles WNW Lesterville SD

Extreme Heat Watch June 20, 11:00am until June 21, 10:00pm
Click here for hazard details and duration
Extreme Heat Watch

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 60. Northwest wind around 5 mph becoming south in the evening.

    Low: 60 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 93. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 93 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 73. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 73 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 101. Heat index values as high as 104. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 101 °F

    Sunny then
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 76. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 76 °F

    Mostly Clear
    and Breezy

  • Saturday

    Saturday: Sunny and hot, with a high near 103. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 103 °F

    Hot and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 81. Breezy.

    Low: 81 °F

    Mostly Clear
    then Mostly
    Clear and
    Breezy

  • Sunday

    Sunday: Sunny and hot, with a high near 100. Breezy.

    High: 100 °F

    Hot and
    Breezy

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 67. Chance of precipitation is 70%.

    Low: 67 °F

    T-storms
    Likely

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 60. Northwest wind around 5 mph becoming south in the evening.
Juneteenth
Sunny, with a high near 93. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Mostly clear, with a low around 73. South wind around 15 mph, with gusts as high as 25 mph.
Friday
Sunny and hot, with a high near 101. Heat index values as high as 104. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.
Friday Night
Mostly clear, with a low around 76. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.
Saturday
Sunny and hot, with a high near 103. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.
Saturday Night
Mostly clear, with a low around 81. Breezy.
Sunday
Sunny and hot, with a high near 100. Breezy.
Sunday Night
Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 67. Chance of precipitation is 70%.
Monday
A chance of showers and thunderstorms, then showers likely after 1pm. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.
Tuesday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 73. Chance of precipitation is 70%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 61. Chance of precipitation is 80%.
Wednesday
A 50 percent chance of showers. Cloudy, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Lesterville SD
 43.05°N 97.67°W (Elev. 1362 ft)
Last Update:
5:01 pm CDT Jun 18, 2025
Forecast Valid:
5pm CDT Jun 18, 2025-6pm CDT Jun 25, 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