Maple Island Conservation Area Weather Forecast

    • 80
    • 100

    Hot

    • 80
    • 100

    Hot

    • 78
    • 100

    Hot

    • 75
    • 99

    Slight Chance Thunderstorms

    • 72
    • 96

    Slight Chance Thunderstorms

    • 71
    • 94

    Slight Chance Thunderstorms

Today 2 Sep St. Charles

Sunny, hot with Highs in the upper 90s. Southwest Winds 5 to 10 Mph. Heat index Values up to 106.

Tonight 2 Sep St. Charles

Mostly clear. Lows in the upper 70s. South Winds around 5 Mph. Heat index Values up to 104 early in the evening.

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Maple Island Conservation Area Temperature Statistics

September Temperature

St. Louis Regional Airport (6.2 miles)

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  • Average September

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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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