Maple Island Conservation Area Weather Forecast

    • 63
    • 82

    Slight Chance Thunderstorms

    • 64
    • 85

    Mostly Cloudy

    • 62
    • 80

    Mostly Cloudy

    • 62
    • 83

    Partly Sunny

    • 59
    • 80

    Partly Sunny

    • 59
    • 83

    Mostly Sunny

Today 27 May St. Charles

Mostly cloudy this Morning, then becoming partly sunny. A chance of Showers with a slight chance of Thunderstorms. Highs in the lower 80s. North Winds around 5 Mph. Chance of rain 40 percent.

Tonight 27 May St. Charles

Mostly cloudy. Patchy fog after midnight. Lows in the lower 60s. Northeast Winds around 5 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

    61.5 °F

  • Highest 17 May, 2026

    86 °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

    54.4 °F

  • Average High 2021–2026

    66.7 °F
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