Santee Sioux Recreation Park Weather Forecast

    • 45
    • 84

    Rain Showers

    • 39
    • 57

    Rain Showers Likely

    • 36
    • 58

    Mostly Cloudy

    • 45
    • 67

    Partly Sunny

    • 47
    • 68

    Mostly Cloudy

    • 52
    • 73

    Chance Thunderstorms

Today 17 May Knox

Mostly cloudy with a chance of Thunderstorms. A chance of Showers this Morning, then Showers likely this afternoon. Highs in the mid 80s. Southeast Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 70 percent.

Tonight 17 May Knox

Mostly cloudy with a chance of Thunderstorms. Showers Likely, mainly in the evening. Cooler with Lows in the mid 40s. Northwest Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Santee Sioux Recreation Park Temperature Statistics

May Temperature

Yankton, Chan Gurney Municipal Airport (23.6 miles)

  • Lowest 6 May, 2026

    30 °F

  • Average May

    57.4 °F

  • Highest 11 May, 2026

    86 °F

Climate (2021–Present)

Yankton, Chan Gurney Municipal Airport (23.6 miles)

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  • Average Low 2021–2026

    39.3 °F

  • Average 2021–2026

    50.5 °F

  • Average High 2021–2026

    61.8 °F
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