Lewis and Clark Lake Weather Forecast

    • 46
    • 72

    Chance Rain Showers

    • 52
    • 83

    Partly Sunny

    • 29
    • 64

    Chance Snow Showers

    • 27
    • 48

    Partly Sunny

    • 38
    • 62

    Mostly Sunny

    • 47
    • 71

    Mostly Sunny

Today 15 Apr Knox

Partly sunny. A slight chance of Showers in the Morning, then a chance of Showers in the afternoon. Highs in the lower 70s. North Winds 5 to 10 Mph. Chance of rain 40 percent.

Tonight 15 Apr Knox

Mostly cloudy with a 50 percent chance of Showers. Near steady temperature in the upper 40s. Northeast Winds around 5 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

    43.9 °F

  • Highest 12 April, 2026

    84 °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

    50.4 °F

  • Average High 2021–2026

    61.7 °F
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