Saint Charles Weather Forecast

    • 63
    • 89

    Rain Showers

    • 51
    • 69

    Chance Rain Showers

    • 53
    • 72

    Mostly Sunny

    • 52
    • 76

    Sunny

    • 48
    • 71

    Sunny

    • 50
    • 71

    Mostly Sunny

    • 55
    • 77

    Mostly Sunny

Today 1 Oct St. Charles

Mostly clear. Lows in the lower 50s. Highs around 80.

Tonight 1 Oct St. Charles

Showers with a chance of Thunderstorms. Cooler with Lows in the lower 60s. Northwest Winds 10 to 15 Mph with Gusts up to 30 Mph, becoming north after midnight. Chance of rain near 100 percent.

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Saint Charles Temperature Statistics

October Temperature

St. Louis Lambert International Airport (6.2 miles)

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  • Average October

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Climate (2021–2026)

St. Louis Lambert International Airport (6.2 miles)

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  • Average Low 2021–2026

    50.7 °F

  • Average 2021–2026

    60.2 °F

  • Average High 2021–2026

    69.7 °F
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