Union Grove Weather Forecast

    • 50
    • 72

    Decreasing Clouds

    • 57
    • 83

    Chance Thunderstorms

    • 60
    • 88

    Chance Thunderstorms

    • 59
    • 85

    Partly Sunny

    • 59
    • 83

    Chance Thunderstorms

    • 59
    • 81

    Chance Thunderstorms

Today 23 May Union

Mostly sunny. Highs in the lower 70s. West Winds 5 to 10 Mph.

Tonight 23 May Union

Partly cloudy with a slight chance of Showers and Thunderstorms in the Evening, then mostly clear after midnight. Lows in the upper 40s. South Winds 5 to 10 Mph. Chance of rain 20 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Union Grove Temperature Statistics

May Temperature

Yankton, Chan Gurney Municipal Airport (30.4 miles)

  • Lowest 6 May, 2026

    30 °F

  • Average May

    57.9 °F

  • Highest 15 May, 2026

    88 °F

Climate (2021–Present)

Yankton, Chan Gurney Municipal Airport (30.4 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    39.3 °F

  • Average 2021–2026

    50.5 °F

  • Average High 2021–2026

    61.8 °F
Get WillyWeather+ to remove ads