Maple Island Conservation Area Weather Forecast

    • 72
    • 92

    Decreasing Clouds

    • 65
    • 88

    Rain Showers

    • 55
    • 73

    Rain Showers Likely

    • 53
    • 72

    Partly Sunny

    • 50
    • 75

    Mostly Sunny

    • 47
    • 69

    Mostly Sunny

Today 30 Sep St. Charles

Mostly cloudy in the Morning, then becoming partly sunny. Highs in the lower 90s. South Winds 5 to 10 Mph.

Tonight 30 Sep St. Charles

Mostly cloudy. Lows in the lower 70s. South Winds 5 to 10 Mph.

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  • Temperature Real-Time

Maple Island Conservation Area Temperature Statistics

September Temperature

St. Louis Regional Airport (6.2 miles)

  • Lowest 23 September, 2026

    55.4 °F

  • Average September

    73.9 °F

  • Highest 5 September, 2026

    100.4 °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

    54.6 °F

  • Average High 2021–2026

    66.6 °F
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