St. Charles Airport Weather Forecast

    • 41
    • 65

    Mostly Sunny

    • 53
    • 73

    Partly Sunny

    • 41
    • 71

    Sunny

    • 55
    • 66

    Chance Rain

    • 42
    • 69

    Partly Sunny

    • 41
    • 65

    Partly Sunny

    • 31
    • 52

    Mostly Sunny

Today 3 Nov St. Charles

Sunny. Not as cool with Highs in the lower 60s. Northwest Winds 5 to 10 Mph.

Tonight 3 Nov St. Charles

Mostly clear this Evening, then becoming partly cloudy. Lows around 40. Southwest Winds around 5 Mph, becoming southeast after midnight.

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St. Charles Airport Temperature Statistics

November Temperature

St. Charles, St. Charles County Smartt Airport (6.2 miles)

  • Lowest 1 November, 2025

    36 °F

  • Average November

    44.8 °F

  • Highest 1 November, 2025

    52 °F

Climate (2020–Present)

St. Charles, St. Charles County Smartt Airport (6.2 miles)

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  • Average Low 2020–2025

    47.5 °F

  • Average 2020–2025

    57.8 °F

  • Average High 2020–2025

    68.6 °F
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