Maple Island Conservation Area Weather Forecast

    • 74
    • 93

    Slight Chance Thunderstorms

    • 72
    • 90

    Chance Thunderstorms

    • 78
    • 95

    Mostly Sunny

    • 70
    • 96

    Mostly Sunny

    • 65
    • 86

    Partly Sunny

    • 67
    • 86

    Partly Sunny

Today 18 Jul St. Charles

Sunny with Highs in the lower 90s. West Winds 5 to 10 Mph. Heat index Values up to 104.

Tonight 18 Jul St. Charles

Mostly clear in the Evening, then becoming partly cloudy. A slight chance of Showers and Thunderstorms. Humid with Lows in the mid 70s. West Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 102 early in the evening.

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  • Temperature Real-Time

Maple Island Conservation Area Temperature Statistics

July Temperature

St. Louis Regional Airport (6.2 miles)

  • Lowest 14 July, 2026

    66.4 °F

  • Average July

    76.8 °F

  • Highest 2 July, 2026

    93.2 °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

    66.7 °F
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