Union Grove Weather Forecast

    • 58
    • 78

    Partly Cloudy

    • 60
    • 77

    Chance Rain Showers

    • 46
    • 72

    Chance Rain Showers

    • 42
    • 57

    Rain Showers

    • 39
    • 52

    Rain Showers Likely

    • 39
    • 54

    Slight Chance Rain Showers

Today 22 Oct Union

Patchy fog this morning. Sunny. Highs in the upper 70s. Southeast Winds around 5 Mph, becoming south 10 to 15 Mph this afternoon.

Tonight 22 Oct Union

Mostly clear in the Evening, then becoming partly cloudy. Not as cool with Lows in the upper 50s. South Winds 10 to 15 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Union Grove Temperature Statistics

October Temperature

Yankton, Chan Gurney Municipal Airport (30.4 miles)

  • Lowest 17 October, 2026

    33.1 °F

  • Average October

    58.8 °F

  • Highest 10 October, 2026

    91.9 °F

Climate (2021–2026)

Yankton, Chan Gurney Municipal Airport (30.4 miles)

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  • Average Low 2021–2026

    39.4 °F

  • Average 2021–2026

    50.5 °F

  • Average High 2021–2026

    61.7 °F
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