Unionville Weather Forecast

    • 64
    • 82

    Slight Chance Thunderstorms

    • 64
    • 82

    Slight Chance Thunderstorms

    • 63
    • 77

    Chance Rain Showers

    • 62
    • 80

    Chance Thunderstorms

    • 59
    • 79

    Slight Chance Rain Showers

    • 58
    • 80

    Mostly Sunny

Today 27 May Massac

Mostly cloudy in the Morning, then becoming mostly sunny. Patchy fog in the morning. Highs in the lower 80s. West Winds around 5 Mph.

Tonight 27 May Massac

Mostly cloudy. Patchy fog. Near steady temperature in the mid 60s. Calm Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Unionville Temperature Statistics

May Temperature

Metropolis Municipal Airport (11.8 miles)

  • Lowest 2 May, 2026

    41 °F

  • Average May

    65 °F

  • Highest 18 May, 2026

    87.4 °F

Climate (2021–Present)

Metropolis Municipal Airport (11.8 miles)

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  • Average Low 2021–2026

    48.9 °F

  • Average 2021–2026

    59.2 °F

  • Average High 2021–2026

    69.6 °F
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