Union Grove Weather Forecast

    • 69
    • 84

    Chance Thunderstorms

    • 72
    • 91

    Decreasing Clouds

    • 71
    • 92

    Slight Chance Thunderstorms

    • 67
    • 89

    Chance Thunderstorms

    • 66
    • 87

    Chance Thunderstorms

    • 69
    • 89

    Slight Chance Thunderstorms

    • 67
    • 89

    Slight Chance Thunderstorms

Today 28 Aug Union

Partly sunny. Highs in the mid 80s. South Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 28 Aug Union

Partly cloudy this Evening, then cloudy with a chance of Showers and Thunderstorms after midnight. Warmer with Lows around 70. South Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 50 percent.

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  • Temperature Real-Time

Union Grove Temperature Statistics

August Temperature

Yankton, Chan Gurney Municipal Airport (30.4 miles)

  • Lowest 5 August, 2026

    52 °F

  • Average August

    72.7 °F

  • Highest 11 August, 2026

    90 °F

Climate (2021–2026)

Yankton, Chan Gurney Municipal Airport (30.4 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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