Maple Island Conservation Area Weather Forecast

    • 65
    • 93

    Mostly Sunny

    • 62
    • 89

    Mostly Sunny

    • 62
    • 87

    Mostly Sunny

    • 67
    • 90

    Partly Sunny

    • 73
    • 95

    Mostly Sunny

    • 76
    • 97

    Hot

Today 26 Aug St. Charles

Mostly sunny. Highs in the lower 90s. South Winds around 5 Mph, becoming west this afternoon.

Tonight 26 Aug St. Charles

Partly cloudy in the Evening, then clearing. Lows in the upper 60s. Northwest Winds 5 to 10 Mph.

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Maple Island Conservation Area Temperature Statistics

August Temperature

St. Louis Regional Airport (6.2 miles)

  • Lowest 24 August, 2026

    54.5 °F

  • Average August

    74.9 °F

  • Highest 11 August, 2026

    95 °F

Climate (2021–2026)

St. Louis Regional Airport (6.2 miles)

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  • Average Low 2021–2026

    46.6 °F

  • Average 2021–2026

    54.5 °F

  • Average High 2021–2026

    66.6 °F
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