Missouri National Recreation River Weather Forecast

    • 76
    • 92

    Slight Chance Thunderstorms

    • 68
    • 93

    Chance Thunderstorms

    • 68
    • 84

    Slight Chance Thunderstorms

    • 70
    • 88

    Slight Chance Thunderstorms

    • 71
    • 94

    Mostly Sunny

    • 72
    • 95

    Slight Chance Thunderstorms

Today 22 Jul Knox

Mostly sunny. A slight chance of Showers and Thunderstorms in the morning. Humid with Highs in the lower 90s. South Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 20 percent. Heat index Values up to 107 in the afternoon.

Tonight 22 Jul Knox

Mostly clear in the Evening, then partly cloudy with a slight chance of Showers and Thunderstorms after midnight. Humid with Lows in the lower 70s. South Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 20 percent.

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Missouri National Recreation River Temperature Statistics

July Temperature

Yankton, Chan Gurney Municipal Airport (13.7 miles)

  • Lowest 17 July, 2025

    55.7 °F

  • Average July

    75.2 °F

  • Highest 3 July, 2025

    94.6 °F

Climate (2020–Present)

Yankton, Chan Gurney Municipal Airport (13.7 miles)

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  • Average Low 2020–2025

    39 °F

  • Average 2020–2025

    50 °F

  • Average High 2020–2025

    61.3 °F
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