Yankton Weather Forecast

    • 56
    • 81

    Rain Showers Likely

    • 53
    • 73

    Chance Rain Showers

    • 59
    • 68

    Chance Rain Showers

    • 60
    • 74

    Rain Showers Likely

    • 59
    • 76

    Chance Rain Showers

    • 54
    • 73

    Slight Chance Rain Showers

Today 14 Sep Yankton

Mostly cloudy with a chance of Thunderstorms. Showers Likely, mainly in the morning. Breezy, warmer. More humid with Highs in the upper 70s. Southeast Winds 15 to 25 Mph with Gusts up to 35 Mph. Chance of rain 70 percent.

Tonight 14 Sep Yankton

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the mid 50s. Northwest Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Yankton Temperature Statistics

September Temperature

Yankton, Chan Gurney Municipal Airport (3.1 miles)

  • Lowest 10 September, 2026

    54 °F

  • Average September

    76.3 °F

  • Highest 4 September, 2026

    95 °F

Climate (2021–2026)

Yankton, Chan Gurney Municipal Airport (3.1 miles)

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  • Average Low 2021–2026

    39.4 °F

  • Average 2021–2026

    50.6 °F

  • Average High 2021–2026

    61.8 °F
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