Maple Island Conservation Area Weather Forecast

    • 70
    • 91

    Decreasing Clouds

    • 74
    • 97

    Partly Sunny

    • 78
    • 99

    Hot

    • 79
    • 101

    Hot

    • 80
    • 101

    Hot

    • 77
    • 99

    Slight Chance Rain Showers

Today 29 Aug St. Charles

Mostly sunny. Highs in the upper 80s. South Winds 5 to 10 Mph.

Tonight 29 Aug St. Charles

Partly cloudy. Lows in the upper 60s. South 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

    74.5 °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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