Lewis and Clark Lake Weather Forecast

    • 49
    • 75

    Becoming Sunny

    • 49
    • 66

    Mostly Sunny

    • 59
    • 70

    Mostly Sunny

    • 57
    • 78

    Mostly Sunny

    • 56
    • 71

    Partly Sunny

    • 57
    • 72

    Mostly Sunny

    • 62
    • 73

    Mostly Sunny

Today 3 Oct Knox

Sunny. Highs in the upper 70s. West Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 3 Oct Knox

Mostly clear. Lows in the upper 40s. Northwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lewis and Clark Lake Temperature Statistics

October Temperature

Yankton, Chan Gurney Municipal Airport (8.1 miles)

  • Lowest 1 October, 2026

    50 °F

  • Average October

    61 °F

  • Highest 1 October, 2026

    70 °F

Climate (2021–2026)

Yankton, Chan Gurney Municipal Airport (8.1 miles)

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  • Average Low 2021–2026

    39.4 °F

  • Average 2021–2026

    50.5 °F

  • Average High 2021–2026

    61.7 °F
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