Maple Island Conservation Area Weather Forecast

    • 76
    • 96

    Chance Thunderstorms

    • 75
    • 94

    Chance Thunderstorms

    • 71
    • 91

    Chance Thunderstorms

    • 69
    • 88

    Slight Chance Thunderstorms

    • 70
    • 89

    Partly Sunny

    • 72
    • 92

    Slight Chance Thunderstorms

    • 73
    • 93

    Chance Thunderstorms

Today 3 Jul St. Charles

Mostly sunny with a chance of Showers and Thunderstorms. Hot. Near steady temperature in the mid 90s. South Winds 5 to 10 Mph. Chance of rain 30 percent. Heat index Values up to 108.

Tonight 3 Jul St. Charles

Mostly clear. A slight chance of Showers and Thunderstorms this evening. Lows in the mid 70s. South Winds around 5 Mph. Chance of rain 20 percent. Heat index Values up to 103 early this 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 1 July, 2026

    73.8 °F

  • Average July

    82.5 °F

  • Highest 1 July, 2026

    91.4 °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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