Lewis and Clark Lake Weather Forecast

    • 36
    • 60

    Slight Chance Thunderstorms

    • 32
    • 55

    Partly Sunny

    • 34
    • 59

    Partly Sunny

    • 41
    • 66

    Mostly Sunny

    • 43
    • 70

    Partly Sunny

    • 43
    • 72

    Partly Sunny

Today 29 Apr Knox

Mostly sunny. Areas of frost in the morning. A slight chance of rain Showers in the afternoon. Highs around 60. West Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 29 Apr Knox

Partly cloudy in the Evening, then becoming mostly cloudy. A 20 percent chance of Showers. Lows in the mid 30s. North Winds 5 to 10 Mph.

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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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