Unionville Weather Forecast

    • 55
    • 75

    Decreasing Clouds

    • 57
    • 78

    Partly Sunny

    • 57
    • 75

    Mostly Cloudy

    • 55
    • 76

    Partly Sunny

    • 57
    • 80

    Mostly Sunny

    • 66
    • 87

    Chance Rain Showers

Today 24 Sep Massac

Mostly cloudy with patchy very light drizzle this Morning, then partly sunny this afternoon. Highs in the mid 70s. Northeast Winds around 5 Mph.

Tonight 24 Sep Massac

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the mid 50s. Northeast Winds around 5 Mph in the Evening, becoming light and variable.

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Unionville Temperature Statistics

September Temperature

Metropolis Municipal Airport (11.8 miles)

  • Lowest 8 September, 2026

    60.8 °F

  • Average September

    80.4 °F

  • Highest 5 September, 2026

    101.3 °F

Climate (2021–2026)

Metropolis Municipal Airport (11.8 miles)

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  • Average Low 2021–2026

    49.6 °F

  • Average 2021–2026

    59.8 °F

  • Average High 2021–2026

    70.3 °F
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