Lake Yankton Weather Forecast

    • 73
    • 92

    Increasing Clouds

    • 66
    • 91

    Chance Thunderstorms

    • 65
    • 87

    Chance Rain Showers

    • 66
    • 89

    Slight Chance Thunderstorms

    • 69
    • 93

    Mostly Sunny

    • 73
    • 98

    Hot

Today 7 Jul Yankton

Mostly sunny. Highs in the lower 90s. South Winds 10 to 15 Mph.

Tonight 7 Jul Yankton

Mostly clear in the Evening, then becoming mostly cloudy. Humid with Lows in the lower 70s. South Winds 15 to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Yankton Temperature Statistics

July Temperature

Yankton, Chan Gurney Municipal Airport (5.6 miles)

  • Lowest 3 July, 2026

    64.9 °F

  • Average July

    76.3 °F

  • Highest 2 July, 2026

    91 °F

Climate (2021–2026)

Yankton, Chan Gurney Municipal Airport (5.6 miles)

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  • Average Low 2021–2026

    39.3 °F

  • Average 2021–2026

    50.4 °F

  • Average High 2021–2026

    61.8 °F
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