Lake Saint Louis Weather Forecast

    • 67
    • 83

    Chance Thunderstorms

    • 65
    • 86

    Mostly Sunny

    • 69
    • 87

    Mostly Sunny

    • 70
    • 89

    Mostly Sunny

    • 72
    • 91

    Mostly Sunny

    • 72
    • 91

    Mostly Sunny

Today 11 Jul St. Charles

Numerous Showers and Thunderstorms. Humid with Highs in the mid 80s. South Winds around 5 Mph, becoming northeast in the afternoon. Chance of rain 70 percent.

Tonight 11 Jul St. Charles

Mostly cloudy with a chance of Showers and Thunderstorms. Some Thunderstorms may produce heavy rainfall. Near steady temperature in the lower 70s. Southwest Winds around 5 Mph. Chance of rain 50 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Saint Louis Temperature Statistics

July Temperature

St. Louis, Spirit Of St. Louis Airport (11.2 miles)

  • Lowest 6 July, 2026

    68.6 °F

  • Average July

    81.5 °F

  • Highest 2 July, 2026

    96.7 °F

Climate (2021–2026)

St. Louis, Spirit Of St. Louis Airport (11.2 miles)

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

  • Average Low 2021–2026

    46.1 °F

  • Average 2021–2026

    57.4 °F

  • Average High 2021–2026

    68.9 °F
Get WillyWeather+ to remove ads