Union Grove Weather Forecast

    • 58
    • 79

    Partly Sunny

    • 61
    • 83

    Rain Showers Likely

    • 57
    • 75

    Rain Showers Likely

    • 57
    • 74

    Slight Chance Thunderstorms

    • 59
    • 74

    Mostly Sunny

    • 60
    • 79

    Partly Sunny

    • 60
    • 76

    Mostly Sunny

Today 16 Aug Union

Mostly sunny. Highs around 80. North Winds 5 to 10 Mph.

Tonight 16 Aug Union

Mostly clear. Lows in the upper 50s. North Winds around 5 Mph.

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Union Grove Temperature Statistics

August Temperature

Yankton, Chan Gurney Municipal Airport (30.4 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 (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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