Maple Island Conservation Area Weather Forecast

    • 67
    • 85

    Isolated Thunderstorms

    • 66
    • 84

    Thunderstorms

    • 61
    • 77

    Mostly Cloudy

    • 63
    • 81

    Partly Sunny

    • 63
    • 84

    Partly Sunny

    • 63
    • 83

    Slight Chance Thunderstorms

    • 66
    • 84

    Chance Thunderstorms

Today 20 Jun St. Charles

Sunny. Near steady temperature in the lower 80s. Northwest Winds around 5 Mph.

Tonight 20 Jun St. Charles

Mostly clear this Evening, then becoming mostly cloudy. Lows in the upper 60s. Northeast Winds around 5 Mph, becoming east after midnight.

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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

    72.4 °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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