St. Charles County Smartt Airport Weather Forecast

    • 53
    • 81

    Sunny

    • 51
    • 77

    Sunny

    • 56
    • 80

    Sunny

    • 55
    • 85

    Sunny

    • 57
    • 84

    Mostly Sunny

    • 58
    • 85

    Mostly Sunny

Today 4 Oct St. Charles

Sunny. Highs around 80. Northwest Winds 5 to 10 Mph.

Tonight 4 Oct St. Charles

Clear. Lows in the lower 50s. North Winds around 5 Mph.

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St. Charles County Smartt Airport Temperature Statistics

October Temperature

St. Charles, St. Charles County Smartt Airport (0 miles)

  • Lowest 2 October, 2026

    60.1 °F

  • Average October

    71.6 °F

  • Highest 1 October, 2026

    91 °F

Climate (2021–2026)

St. Charles, St. Charles County Smartt Airport (0 miles)

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  • Average Low 2021–2026

    47.4 °F

  • Average 2021–2026

    58.1 °F

  • Average High 2021–2026

    69 °F
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