Maple Island Conservation Area Weather Forecast

    • 61
    • 84

    Increasing Clouds

    • 63
    • 85

    Mostly Sunny

    • 68
    • 85

    Partly Sunny

    • 69
    • 90

    Slight Chance Thunderstorms

    • 67
    • 88

    Mostly Sunny

    • 67
    • 86

    Partly Sunny

Today 23 Aug St. Charles

Sunny. Highs in the lower 80s. Northwest Winds 5 to 10 Mph.

Tonight 23 Aug St. Charles

Partly cloudy. Lows in the lower 60s. North Winds around 5 Mph, becoming northeast after midnight.

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Maple Island Conservation Area Temperature Statistics

August Temperature

St. Louis Regional Airport (6.2 miles)

  • Lowest 21 August, 2026

    62.4 °F

  • Average August

    75.9 °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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