Maple Island Conservation Area Weather Forecast

    • 64
    • 79

    Thunderstorms

    • 60
    • 77

    Partly Sunny

    • 63
    • 82

    Mostly Sunny

    • 65
    • 84

    Slight Chance Thunderstorms

    • 64
    • 84

    Chance Thunderstorms

    • 68
    • 85

    Chance Thunderstorms

Today 21 Jun St. Charles

Showers and Thunderstorms. Some Thunderstorms may produce heavy rainfall. Locally heavy rainfall possible. Highs in the upper 70s. South Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 90 percent.

Tonight 21 Jun St. Charles

Mostly cloudy. Scattered Showers and Thunderstorms in the evening. Some Thunderstorms may produce heavy rainfall in the evening. Lows in the lower 60s. West Winds 10 to 15 Mph with Gusts up to 25 Mph, becoming northwest 5 to 10 Mph after midnight. Chance of rain 50 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 3 June, 2026

    52.5 °F

  • Average June

    72.2 °F

  • Highest 9 June, 2026

    91.4 °F

Climate (2021–2026)

St. Louis Regional Airport (6.2 miles)

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  • Average Low 2021–2026

    46.5 °F

  • Average 2021–2026

    54.5 °F

  • Average High 2021–2026

    66.7 °F
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