Union Grove Weather Forecast

    • 72
    • 94

    Mostly Sunny

    • 68
    • 91

    Mostly Sunny

    • 76
    • 96

    Partly Sunny

    • 70
    • 98

    Hot

    • 63
    • 87

    Partly Sunny

    • 61
    • 84

    Partly Sunny

Today 17 Jul Union

Sunny. Highs in the mid 90s. South Winds 5 to 10 Mph.

Tonight 17 Jul Union

Mostly clear. Humid with Lows in the lower 70s. South Winds 5 to 10 Mph, becoming north after midnight. Heat index Values in the upper 90s early in the evening.

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Union Grove Temperature Statistics

July Temperature

Yankton, Chan Gurney Municipal Airport (30.4 miles)

  • Lowest 3 July, 2026

    64.9 °F

  • Average July

    78.2 °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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