Summerville Weather Forecast

    • 25
    • 30

    Decreasing Clouds

    • 14
    • 47

    Mostly Sunny

    • 14
    • 24

    Mostly Sunny

    • 24
    • 33

    Mostly Sunny

    • 31
    • 47

    Mostly Sunny

    • 41
    • 51

    Chance Rain

Today 3 Dec Macoupin

Mostly cloudy late this Morning, then clearing. Highs in the lower 30s. Southwest Winds 5 to 10 Mph.

Tonight 3 Dec Macoupin

Mostly clear. Not as cool with Lows in the mid 20s. Temperature rising to around 30 after midnight. South Winds 10 to 15 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Summerville Temperature Statistics

December Temperature

St. Louis Regional Airport (21.1 miles)

  • Lowest 1 December, 2024

    16.2 °F

  • Average December

    24.6 °F

  • Highest 1 December, 2024

    30.2 °F

Climate (2019–Present)

St. Louis Regional Airport (21.1 miles)

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  • Average Low 2019–2024

    45.9 °F

  • Average 2019–2024

    53.7 °F

  • Average High 2019–2024

    65.8 °F
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