Maple Island Conservation Area Weather Forecast

    • 70
    • 90

    Rain Showers

    • 66
    • 86

    Mostly Sunny

    • 69
    • 89

    Mostly Sunny

    • 72
    • 92

    Mostly Sunny

    • 74
    • 94

    Partly Sunny

    • 75
    • 95

    Chance Thunderstorms

    • 73
    • 93

    Chance Thunderstorms

Today 30 Jun St. Charles

Partly sunny with scattered Showers and Thunderstorms. Near steady temperature in the upper 80s. West Winds 5 to 10 Mph. Chance of rain 50 percent.

Tonight 30 Jun St. Charles

Mostly cloudy. Numerous Showers and scattered Thunderstorms this Evening, then isolated Showers and Thunderstorms after midnight. Lows around 70. Northwest Winds 5 to 10 Mph. Chance of rain 60 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Maple Island Conservation Area Temperature Statistics

June Temperature

St. Louis Regional Airport (6.2 miles)

  • Lowest 2 June, 2025

    55.6 °F

  • Average June

    73.1 °F

  • Highest 25 June, 2025

    95 °F

Climate (2020–Present)

St. Louis Regional Airport (6.2 miles)

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  • Average Low 2020–2025

    46 °F

  • Average 2020–2025

    53.8 °F

  • Average High 2020–2025

    65.9 °F
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