Sandy Island Conservation Area Weather Forecast

    • 65
    • 85

    Mostly Sunny

    • 64
    • 83

    Mostly Sunny

    • 66
    • 85

    Mostly Sunny

    • 61
    • 86

    Mostly Sunny

    • 56
    • 79

    Mostly Sunny

    • 55
    • 76

    Partly Sunny

Today 20 Aug Lincoln

Mostly sunny. Highs in the mid 80s. Northeast Winds 5 to 10 Mph.

Tonight 20 Aug Lincoln

Mostly clear. Lows in the mid 60s. Northeast Winds 5 to 10 Mph.

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Sandy Island Conservation Area Temperature Statistics

August Temperature

St. Charles, St. Charles County Smartt Airport (16.2 miles)

  • Lowest 3 August, 2025

    58.6 °F

  • Average August

    78.7 °F

  • Highest 15 August, 2025

    96.7 °F

Climate (2020–Present)

St. Charles, St. Charles County Smartt Airport (16.2 miles)

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  • Average Low 2020–2025

    47.3 °F

  • Average 2020–2025

    57.6 °F

  • Average High 2020–2025

    68.4 °F
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