Maple Island Conservation Area Weather Forecast

    • 69
    • 92

    Isolated Thunderstorms

    • 68
    • 88

    Mostly Sunny

    • 70
    • 89

    Partly Sunny

    • 70
    • 86

    Rain Showers Likely

    • 69
    • 83

    Chance Rain Showers

    • 69
    • 87

    Slight Chance Thunderstorms

Today 28 Jul St. Charles

Mostly sunny. Humid with Highs in the lower 90s. Northwest Winds 5 to 10 Mph, becoming north in the afternoon. Heat index Values up to 104.

Tonight 28 Jul St. Charles

Mostly cloudy in the Evening, then clearing. Lows in the upper 60s. Northeast Winds 5 to 10 Mph. Heat index Values up to 100 early in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Maple Island Conservation Area Temperature Statistics

July Temperature

St. Louis Regional Airport (6.2 miles)

  • Lowest 24 July, 2026

    59.9 °F

  • Average July

    76.3 °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

    66.6 °F
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