Unionville Weather Forecast

    • 28
    • 50

    Chance Rain Showers

    • 24
    • 39

    Mostly Sunny

    • 33
    • 48

    Mostly Sunny

    • 39
    • 55

    Mostly Cloudy

    • 23
    • 47

    Mostly Cloudy

    • 24
    • 36

    Partly Sunny

Today 10 Jan Massac

Mostly cloudy with a chance of Showers in the Morning, then mostly sunny in the afternoon. Highs around 50. Northwest Winds 5 to 10 Mph. Chance of rain 30 percent.

Tonight 10 Jan Massac

Mostly cloudy with a 20 percent chance of Showers. Near steady temperature in the upper 40s. Calm Winds.

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Unionville Temperature Statistics

January Temperature

Metropolis Municipal Airport (11.8 miles)

  • Lowest 4 January, 2026

    22.6 °F

  • Average January

    40.7 °F

  • Highest 6 January, 2026

    64.9 °F

Climate (2021–Present)

Metropolis Municipal Airport (11.8 miles)

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  • Average Low 2021–2026

    48.8 °F

  • Average 2021–2026

    59 °F

  • Average High 2021–2026

    69.4 °F
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