Maple Island Conservation Area Weather Forecast

    • 77
    • 98

    Hot

    • 78
    • 98

    Hot

    • 78
    • 98

    Slight Chance Thunderstorms

    • 76
    • 97

    Chance Thunderstorms

    • 75
    • 95

    Chance Thunderstorms

    • 74
    • 94

    Chance Thunderstorms

    • 73
    • 93

    Chance Thunderstorms

Today 30 Jun St. Charles

Sunny, hot. Near steady temperature in the mid 90s. Southwest Winds 5 to 10 Mph. Heat index Values up to 110.

Tonight 30 Jun St. Charles

Clear. Lows in the mid 70s. South Winds 5 to 10 Mph. Heat index Values up to 109 early this evening.

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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 °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

    66.6 °F
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