Union Grove Weather Forecast

    • 76
    • 94

    Becoming Sunny

    • 68
    • 98

    Chance Thunderstorms

    • 70
    • 93

    Chance Thunderstorms

    • 69
    • 93

    Rain Showers Likely

    • 70
    • 94

    Rain Showers Likely

    • 72
    • 95

    Chance Thunderstorms

    • 68
    • 93

    Rain Showers Likely

Today 28 Jun Union

Mostly sunny. Much warmer with Highs in the mid 90s. South Winds 15 to 20 Mph with Gusts up to 30 Mph. Heat index Values up to 105.

Tonight 28 Jun Union

Mostly clear. Lows in the upper 70s. South Winds 15 to 20 Mph with Gusts up to 30 Mph. Heat index Values up to 104 early this evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Union Grove Temperature Statistics

June Temperature

Yankton, Chan Gurney Municipal Airport (30.4 miles)

  • Lowest 16 June, 2026

    52 °F

  • Average June

    70.5 °F

  • Highest 9 June, 2026

    95 °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

    50.4 °F

  • Average High 2021–2026

    61.8 °F
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