Saint Charles Weather Forecast

    • 60
    • 78

    Increasing Clouds

    • 56
    • 74

    Chance Rain Showers

    • 57
    • 72

    Chance Rain Showers

    • 61
    • 72

    Rain Showers Likely

    • 58
    • 75

    Rain Showers Likely

    • 50
    • 71

    Chance Rain Showers

Today 30 Oct St. Charles

Partly sunny. Highs in the upper 70s. East Winds 5 to 10 Mph.

Tonight 30 Oct St. Charles

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

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Saint Charles Temperature Statistics

October Temperature

St. Louis Lambert International Airport (6.2 miles)

  • Lowest 17 October, 2026

    41.6 °F

  • Average October

    66.4 °F

  • Highest 13 October, 2026

    93.7 °F

Climate (2021–2026)

St. Louis Lambert International Airport (6.2 miles)

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

  • Average Low 2021–2026

    50.7 °F

  • Average 2021–2026

    60.2 °F

  • Average High 2021–2026

    69.8 °F
Get WillyWeather+ to remove ads