Cuivre Island Conservation Area Weather Forecast

    • 26
    • 33

    Increasing Clouds

    • 37
    • 52

    Partly Sunny

    • 25
    • 46

    Mostly Cloudy

    • 25
    • 38

    Mostly Cloudy

    • 12
    • 34

    Mostly Cloudy

    • 13
    • 23

    Mostly Cloudy

    • 19
    • 28

    Partly Sunny

Today 8 Dec St. Charles

Sunny. Near steady temperature in the lower 30s. West Winds around 5 Mph.

Tonight 8 Dec St. Charles

Partly cloudy this Evening, then becoming mostly cloudy. Lows in the mid 20s. Temperature rising into the lower 30s after midnight. South Winds 5 to 10 Mph.

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Cuivre Island Conservation Area Temperature Statistics

December Temperature

St. Charles, St. Charles County Smartt Airport (12.4 miles)

  • Lowest 5 December, 2025

    8.1 °F

  • Average December

    25 °F

  • Highest 6 December, 2025

    39.9 °F

Climate (2020–Present)

St. Charles, St. Charles County Smartt Airport (12.4 miles)

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  • Average Low 2020–2025

    47.4 °F

  • Average 2020–2025

    57.8 °F

  • Average High 2020–2025

    68.4 °F
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