Maple Island Conservation Area Weather Forecast

    • 64
    • 83

    Rain Showers

    • 62
    • 85

    Chance Rain Showers

    • 58
    • 82

    Mostly Sunny

    • 59
    • 81

    Mostly Sunny

    • 65
    • 86

    Partly Sunny

    • 69
    • 89

    Chance Rain Showers

Today 31 May St. Charles

Partly sunny with a slight chance of Showers and Thunderstorms. Highs in the lower 80s. Southeast Winds around 5 Mph. Chance of rain 20 percent.

Tonight 31 May St. Charles

Partly cloudy in the Evening, then becoming mostly cloudy. A chance of Thunderstorms. Showers. Lows in the mid 60s. Southeast Winds around 5 Mph. Chance of rain 80 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Maple Island Conservation Area Temperature Statistics

May Temperature

St. Louis Regional Airport (6.2 miles)

  • Lowest 7 May, 2026

    39.6 °F

  • Average May

    62.5 °F

  • Highest 28 May, 2026

    87.8 °F

Climate (2021–Present)

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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