Unionville Weather Forecast

    • 76
    • 92

    Decreasing Clouds

    • 78
    • 95

    Chance Thunderstorms

    • 72
    • 93

    Partly Sunny

    • 68
    • 88

    Mostly Sunny

    • 68
    • 88

    Partly Sunny

    • 70
    • 88

    Partly Sunny

Today 26 Jul Massac

Mostly cloudy in the Morning, then becoming mostly sunny. Humid with Highs in the lower 90s. Calm Winds, becoming west around 5 Mph in the afternoon. Highest heat index Readings heat index Readings up to 108 in the afternoon.

Tonight 26 Jul Massac

Mostly cloudy. Near steady temperature in the lower 70s. Calm Winds.

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Unionville Temperature Statistics

July Temperature

Metropolis Municipal Airport (11.8 miles)

  • Lowest 23 July, 2026

    60.8 °F

  • Average July

    78.2 °F

  • Highest 21 July, 2026

    94.5 °F

Climate (2021–2026)

Metropolis Municipal Airport (11.8 miles)

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  • Average Low 2021–2026

    49.5 °F

  • Average 2021–2026

    59.7 °F

  • Average High 2021–2026

    70.1 °F
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