National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Yankton, Chan Gurney Municipal Airport (KYKN)

Lat: 42.92°NLon: 97.38°WElev: 1306ft.

Fair

40°F

4°C

Humidity 97%
Wind Speed NW 8 mph
Barometer 30.15 in (1022.9 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 14 Oct 3:56 am CDT
Extended Forecast for

3 Miles W Saint Helena NE

  • Today

    Today: Increasing clouds, with a high near 60. North wind 5 to 9 mph becoming east northeast in the afternoon.

    High: 60 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Showers likely, mainly after 4am. Increasing clouds, with a low around 46. East northeast wind 5 to 7 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 46 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Thursday

    Thursday: Showers, mainly before noon. High near 58. North wind 9 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 58 °F

    Showers then
    Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 40. Breezy, with a northwest wind 20 to 23 mph, with gusts as high as 34 mph.

    Low: 40 °F

    Partly Cloudy
    and Breezy

  • Friday

    Friday: Sunny, with a high near 54. Breezy, with a north northwest wind 19 to 24 mph decreasing to 13 to 18 mph in the afternoon. Winds could gust as high as 36 mph.

    High: 54 °F

    Sunny and
    Breezy

  • Friday Night

    Friday Night: Clear, with a low around 35. Light and variable wind becoming south 5 to 10 mph after midnight. Winds could gust as high as 16 mph.

    Low: 35 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 64. Breezy, with a south wind 14 to 20 mph, with gusts as high as 32 mph.

    High: 64 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 46. Breezy, with a south wind 16 to 18 mph, with gusts as high as 30 mph.

    Low: 46 °F

    Clear and
    Breezy then
    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 66. South wind 11 to 17 mph, with gusts as high as 26 mph.

    High: 66 °F

    Mostly Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 60. North wind 5 to 9 mph becoming east northeast in the afternoon.
Tonight
Showers likely, mainly after 4am. Increasing clouds, with a low around 46. East northeast wind 5 to 7 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Showers, mainly before noon. High near 58. North wind 9 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Partly cloudy, with a low around 40. Breezy, with a northwest wind 20 to 23 mph, with gusts as high as 34 mph.
Friday
Sunny, with a high near 54. Breezy, with a north northwest wind 19 to 24 mph decreasing to 13 to 18 mph in the afternoon. Winds could gust as high as 36 mph.
Friday Night
Clear, with a low around 35. Light and variable wind becoming south 5 to 10 mph after midnight. Winds could gust as high as 16 mph.
Saturday
Sunny, with a high near 64. Breezy, with a south wind 14 to 20 mph, with gusts as high as 32 mph.
Saturday Night
Mostly clear, with a low around 46. Breezy, with a south wind 16 to 18 mph, with gusts as high as 30 mph.
Sunday
Mostly sunny, with a high near 66. South wind 11 to 17 mph, with gusts as high as 26 mph.
Sunday Night
Partly cloudy, with a low around 46. South wind 5 to 7 mph becoming northwest after midnight.
Monday
Sunny, with a high near 68. Light and variable wind becoming east around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 48. South southeast wind around 6 mph.
Tuesday
Sunny, with a high near 72. South wind 7 to 16 mph, with gusts as high as 25 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Saint Helena NE
 42.79°N 97.31°W (Elev. 1348 ft)
Last Update:
4:05 am CDT Oct 14, 2026
Forecast Valid:
4am CDT Oct 14, 2026-6pm CDT Oct 20, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation