Maple Island Conservation Area Weather Forecast

    • 59
    • 74

    Mostly Cloudy

    • 60
    • 71

    Mostly Cloudy

    • 57
    • 77

    Partly Sunny

    • 57
    • 80

    Mostly Sunny

    • 65
    • 82

    Chance Rain Showers

    • 66
    • 80

    Chance Rain Showers

    • 63
    • 79

    Chance Rain Showers

Today 25 Sep St. Charles

Mostly cloudy. A chance of Showers with a slight chance of Thunderstorms. Lows in the lower 60s. Highs in the upper 70s. Chance of rain 40 percent.

Tonight 25 Sep St. Charles

Mostly cloudy. Lows in the upper 50s. Northeast Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Maple Island Conservation Area Temperature Statistics

September Temperature

St. Louis Regional Airport (6.2 miles)

  • Lowest 23 September, 2026

    55.4 °F

  • Average September

    75.9 °F

  • Highest 5 September, 2026

    100.4 °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

    54.6 °F

  • Average High 2021–2026

    66.7 °F
Get WillyWeather+ to remove ads