Maple Island Conservation Area Weather Forecast

    • 71
    • 90

    Thunderstorms

    • 71
    • 85

    Rain Showers

    • 71
    • 87

    Chance Thunderstorms

    • 73
    • 90

    Mostly Sunny

    • 76
    • 93

    Mostly Sunny

    • 76
    • 95

    Partly Sunny

Today 5 Aug St. Charles

Mostly sunny. Scattered Showers and Thunderstorms this afternoon. Highs around 90. South Winds 5 to 10 Mph. Chance of rain 40 percent.

Tonight 5 Aug St. Charles

Mostly cloudy. Scattered Showers and Thunderstorms in the Evening, then Showers and Thunderstorms after midnight. Some Thunderstorms may produce heavy rainfall. Lows in the lower 70s. Southwest Winds around 5 Mph. Chance of rain 80 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Maple Island Conservation Area Temperature Statistics

August Temperature

St. Louis Regional Airport (6.2 miles)

  • Lowest 3 August, 2026

    63.5 °F

  • Average August

    70.8 °F

  • Highest 3 August, 2026

    84.2 °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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