Maple Island Conservation Area Weather Forecast

    • 62
    • 85

    Decreasing Clouds

    • 69
    • 88

    Mostly Sunny

    • 64
    • 86

    Mostly Sunny

    • 64
    • 84

    Partly Sunny

    • 65
    • 83

    Slight Chance Thunderstorms

    • 68
    • 87

    Partly Sunny

Today 20 Aug St. Charles

Mostly cloudy late this Morning, then becoming partly sunny. Isolated Showers this afternoon. Highs in the lower 80s. North Winds around 5 Mph. Chance of rain 20 percent.

Tonight 20 Aug St. Charles

Mostly clear. Patchy fog after midnight. Lows in the mid 60s. Northeast Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Maple Island Conservation Area Temperature Statistics

August Temperature

St. Louis Regional Airport (6.2 miles)

  • Lowest 18 August, 2026

    63.3 °F

  • Average August

    76.3 °F

  • Highest 11 August, 2026

    95 °F

Climate (2021–2026)

St. Louis Regional Airport (6.2 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    46.6 °F

  • Average 2021–2026

    54.5 °F

  • Average High 2021–2026

    66.6 °F
Get WillyWeather+ to remove ads