Union Grove Weather Forecast

    • 67
    • 89

    Sunny

    • 68
    • 91

    Sunny

    • 69
    • 93

    Sunny

    • 68
    • 95

    Mostly Sunny

    • 71
    • 95

    Mostly Sunny

    • 74
    • 96

    Mostly Sunny

Today 11 Jul Union

Sunny with Highs around 90. South Winds 5 to 10 Mph.

Tonight 11 Jul Union

Clear with Lows in the upper 60s. Southeast Winds 5 to 10 Mph.

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  • Temperature Real-Time

Union Grove Temperature Statistics

July Temperature

Yankton, Chan Gurney Municipal Airport (30.4 miles)

  • Lowest 3 July, 2026

    64.9 °F

  • Average July

    77.9 °F

  • Highest 2 July, 2026

    91 °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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