Lewis and Clark Lake Weather Forecast

    • 61
    • 90

    Chance Thunderstorms

    • 42
    • 79

    Chance Thunderstorms

    • 38
    • 63

    Partly Sunny

    • 42
    • 61

    Chance Rain Showers

    • 42
    • 60

    Rain Showers Likely

    • 37
    • 56

    Chance Rain Showers

Today 22 Apr Knox

Sunny, windy with Highs in the upper 80s. South Winds 15 to 20 Mph with Gusts up to 30 Mph, increasing to 20 to 30 Mph with Gusts up to 45 Mph in the afternoon.

Tonight 22 Apr Knox

Mostly cloudy. A chance of Showers and Thunderstorms after midnight. Windy with Lows around 60. South Winds 20 to 30 Mph with Gusts up to 45 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lewis and Clark Lake Temperature Statistics

April Temperature

Yankton, Chan Gurney Municipal Airport (8.1 miles)

  • Lowest 10 April, 2026

    23 °F

  • Average April

    47 °F

  • Highest 16 April, 2026

    87.1 °F

Climate (2021–Present)

Yankton, Chan Gurney Municipal Airport (8.1 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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