Santee Sioux Recreation Park Weather Forecast

    • 62
    • 72

    Mostly Cloudy

    • 63
    • 73

    Rain Showers

    • 57
    • 70

    Rain Showers

    • 56
    • 68

    Rain Showers Likely

    • 51
    • 63

    Mostly Sunny

    • 53
    • 61

    Mostly Sunny

Today 27 Sep Knox

Mostly cloudy. Near steady temperature around 70. East Winds 5 to 10 Mph.

Tonight 27 Sep Knox

Mostly cloudy. Humid with Lows in the lower 60s. Southeast Winds 5 to 10 Mph.

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Santee Sioux Recreation Park Temperature Statistics

September Temperature

Yankton, Chan Gurney Municipal Airport (23.6 miles)

  • Lowest 13 September, 2026

    48.9 °F

  • Average September

    68.4 °F

  • Highest 4 September, 2026

    95 °F

Climate (2021–2026)

Yankton, Chan Gurney Municipal Airport (23.6 miles)

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  • Average Low 2021–2026

    39.4 °F

  • Average 2021–2026

    50.5 °F

  • Average High 2021–2026

    61.8 °F
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