Maple Island Conservation Area Weather Forecast

    • 65
    • 84

    Isolated Thunderstorms

    • 63
    • 82

    Thunderstorms Likely

    • 63
    • 86

    Chance Rain Showers

    • 59
    • 84

    Mostly Sunny

    • 61
    • 82

    Mostly Sunny

    • 66
    • 85

    Partly Sunny

Today 30 May St. Charles

Sunny late this Morning, then becoming partly sunny. Isolated Showers and Thunderstorms this afternoon. Highs in the lower 80s. East Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 30 May St. Charles

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the lower 60s. East Winds 5 to 10 Mph.

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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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