Missouri National Recreation River Weather Forecast

    • 64
    • 85

    Slight Chance Thunderstorms

    • 63
    • 85

    Slight Chance Thunderstorms

    • 62
    • 82

    Chance Rain Showers

    • 63
    • 79

    Chance Rain Showers

    • 66
    • 83

    Slight Chance Thunderstorms

    • 65
    • 85

    Slight Chance Thunderstorms

Today 20 Aug Knox

Sunny. A slight chance of Showers and Thunderstorms this afternoon. Highs in the mid 80s. South Winds 10 to 15 Mph. Chance of rain 20 percent.

Tonight 20 Aug Knox

Mostly clear. A slight chance of Showers and Thunderstorms in the evening. Humid with Lows in the mid 60s. Southwest Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Missouri National Recreation River Temperature Statistics

August Temperature

Yankton, Chan Gurney Municipal Airport (13.7 miles)

  • Lowest 5 August, 2026

    52 °F

  • Average August

    73 °F

  • Highest 11 August, 2026

    90 °F

Climate (2021–2026)

Yankton, Chan Gurney Municipal Airport (13.7 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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