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

87°F

31°C

Humidity 75%
Wind Speed SE 15 G 22 mph
Barometer 29.67 in (1004.4 mb)
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 8 Aug 2:56 pm CDT
Extended Forecast for

Lesterville SD

Heat Advisory until August 8, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until August 8, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • This Afternoon

    High: 91 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A chance of rain and thunderstorms before 3am, then a slight chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 67. South wind 5 to 10 mph becoming north northwest in the evening. Winds could gust as high as 25 mph. Chance of precipitation is 20%.

    Low: 67 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers and thunderstorms before 7am, then a slight chance of showers between 7am and 10am. Cloudy through mid morning, then gradual clearing, with a high near 84. North northwest wind around 5 mph becoming east in the afternoon. Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    T-storms then
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 63. South southeast wind around 5 mph.

    Low: 63 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 81. Northwest wind 5 to 10 mph.

    High: 81 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 61. North northwest wind around 5 mph becoming west after midnight.

    Low: 61 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
A slight chance of showers before 3pm, then a chance of sprinkles between 3pm and 4pm. Mostly sunny, with a high near 91. Heat index values as high as 102. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Tonight
A chance of rain and thunderstorms before 3am, then a slight chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 67. South wind 5 to 10 mph becoming north northwest in the evening. Winds could gust as high as 25 mph. Chance of precipitation is 20%.
Saturday
A slight chance of showers and thunderstorms before 7am, then a slight chance of showers between 7am and 10am. Cloudy through mid morning, then gradual clearing, with a high near 84. North northwest wind around 5 mph becoming east in the afternoon. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 63. South southeast wind around 5 mph.
Sunday
Partly sunny, with a high near 81. Northwest wind 5 to 10 mph.
Sunday Night
Partly cloudy, with a low around 61. North northwest wind around 5 mph becoming west after midnight.
Monday
Sunny, with a high near 85.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
Sunny, with a high near 86.
Tuesday Night
Mostly clear, with a low around 65.
Wednesday
Mostly sunny, with a high near 89.
Wednesday Night
Partly cloudy, with a low around 68.
Thursday
Sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lesterville SD
 43.03°N 97.58°W (Elev. 1362 ft)
Last Update:
2:30 pm CDT Aug 8, 2025
Forecast Valid:
2pm CDT Aug 8, 2025-6pm CDT Aug 14, 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