Beaver Lake Weather Forecast

    • 62
    • 79

    Rain Showers

    • 58
    • 79

    Increasing Clouds

    • 62
    • 81

    Chance Thunderstorms

    • 59
    • 79

    Rain Showers Likely

    • 57
    • 75

    Chance Rain Showers

    • 59
    • 76

    Chance Rain Showers

    • 59
    • 80

    Mostly Sunny

Today 15 Aug Yankton

Showers with a chance of Thunderstorms. Near steady temperature in the upper 70s. West Winds around 5 Mph. Chance of rain 90 percent.

Tonight 15 Aug Yankton

Partly cloudy. A chance of Showers with a slight chance of Thunderstorms this evening. Lows in the lower 60s. Northwest Winds 5 to 10 Mph. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Beaver Lake Temperature Statistics

August Temperature

Yankton, Chan Gurney Municipal Airport (7.5 miles)

  • Lowest 5 August, 2026

    52 °F

  • Average August

    72.8 °F

  • Highest 11 August, 2026

    90 °F

Climate (2021–2026)

Yankton, Chan Gurney Municipal Airport (7.5 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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