Lake Yankton Weather Forecast

    • 56
    • 81

    Increasing Clouds

    • 49
    • 84

    Chance Thunderstorms

    • 52
    • 85

    Mostly Sunny

    • 56
    • 85

    Chance Thunderstorms

    • 52
    • 84

    Rain Showers Likely

    • 46
    • 72

    Slight Chance Thunderstorms

Today 13 May Yankton

Sunny. Highs in the lower 80s. Southwest Winds around 5 Mph.

Tonight 13 May Yankton

Mostly clear in the Evening, then becoming partly cloudy. Lows in the mid 50s. Southeast Winds 15 to 20 Mph. Gusts up to 35 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Yankton Temperature Statistics

May Temperature

Yankton, Chan Gurney Municipal Airport (5.6 miles)

  • Lowest 6 May, 2026

    30 °F

  • Average May

    53.5 °F

  • Highest 8 May, 2026

    75.9 °F

Climate (2021–Present)

Yankton, Chan Gurney Municipal Airport (5.6 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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