Lewis and Clark Lake Weather Forecast

    • 70
    • 96

    Mostly Sunny

    • 78
    • 98

    Hot

    • 70
    • 103

    Hot

    • 62
    • 89

    Partly Sunny

    • 64
    • 84

    Chance Rain Showers

    • 65
    • 86

    Chance Rain Showers

Today 18 Jul Knox

Mostly sunny. A slight chance of Showers this afternoon. Highs in the mid 90s. Northeast Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 18 Jul Knox

Mostly clear. Lows in the lower 70s. East Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lewis and Clark Lake Temperature Statistics

July Temperature

Yankton, Chan Gurney Municipal Airport (8.1 miles)

  • Lowest 3 July, 2026

    64.9 °F

  • Average July

    78.3 °F

  • Highest 16 July, 2026

    91.9 °F

Climate (2021–2026)

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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