St. Charles Airport Weather Forecast

    • 31
    • 53

    Increasing Clouds

    • 43
    • 49

    Rain

    • 32
    • 53

    Chance Rain

    • 39
    • 52

    Mostly Cloudy

    • 37
    • 63

    Partly Sunny

    • 31
    • 51

    Partly Sunny

Today 29 Jan St. Charles

Sunny. Highs in the lower 50s. Northwest Winds around 5 Mph.

Tonight 29 Jan St. Charles

Mostly clear in the Evening, then becoming mostly cloudy. Lows in the lower 30s. Southeast Winds around 5 Mph.

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St. Charles Airport Temperature Statistics

January Temperature

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

  • Lowest 21 January, 2025

    -0.1 °F

  • Average January

    23.9 °F

  • Highest 17 January, 2025

    48.7 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    47.4 °F

  • Average 2020–2025

    57.5 °F

  • Average High 2020–2025

    68.1 °F
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