Maple Island Conservation Area Weather Forecast

    • 75
    • 94

    Slight Chance Thunderstorms

    • 72
    • 91

    Chance Thunderstorms

    • 78
    • 94

    Partly Sunny

    • 71
    • 96

    Mostly Sunny

    • 65
    • 86

    Mostly Sunny

    • 66
    • 85

    Chance Thunderstorms

    • 69
    • 86

    Slight Chance Thunderstorms

Today 18 Jul St. Charles

Sunny with a slight chance of Showers and Thunderstorms. Near steady temperature in the lower 90s. West Winds around 10 Mph. Chance of rain 20 percent. Heat index Values up to 106.

Tonight 18 Jul St. Charles

Mostly clear this Evening, then becoming partly cloudy. A slight chance of Showers and Thunderstorms. Lows in the mid 70s. West Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 101 early this evening.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Maple Island Conservation Area Temperature Statistics

July Temperature

St. Louis Regional Airport (6.2 miles)

  • Lowest 14 July, 2026

    66.4 °F

  • Average July

    76.8 °F

  • Highest 2 July, 2026

    93.2 °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

    66.7 °F
Get WillyWeather+ to remove ads