Union Grove Weather Forecast

    • 65
    • 88

    Chance Thunderstorms

    • 62
    • 84

    Mostly Cloudy

    • 64
    • 86

    Partly Sunny

    • 66
    • 88

    Mostly Sunny

    • 69
    • 92

    Mostly Sunny

    • 72
    • 94

    Mostly Sunny

Today 8 Jul Union

Partly sunny with a chance of Showers. A chance of Thunderstorms, mainly in the morning. Humid with Highs in the upper 80s. South Winds around 10 Mph, becoming southwest in the afternoon. Chance of rain 50 percent.

Tonight 8 Jul Union

Mostly cloudy with a chance of Showers and Thunderstorms. Humid with Lows in the mid 60s. North Winds 5 to 10 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • 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

    76.8 °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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