Lewis and Clark Lake Weather Forecast

    • 30
    • 62

    Decreasing Clouds

    • 29
    • 53

    Chance Rain/Snow

    • 42
    • 59

    Chance Rain Showers

    • 57
    • 68

    Chance Rain Showers

    • 52
    • 77

    Rain Showers Likely

    • 31
    • 71

    Chance Rain/Snow

Today 8 Apr Knox

Mostly sunny and breezy. Not as cool with Highs in the lower 60s. West Winds 15 to 25 Mph, becoming northwest 15 to 20 Mph in the afternoon.

Tonight 8 Apr Knox

Mostly clear. Cold with Lows around 30. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph, becoming north around 5 Mph after midnight.

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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 1 April, 2026

    30.9 °F

  • Average April

    39 °F

  • Highest 5 April, 2026

    64.9 °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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