Saint Charles Weather Forecast

    • 25
    • 36

    Mostly Cloudy

    • 9
    • 30

    Partly Sunny

    • 24
    • 31

    Partly Sunny

    • 27
    • 46

    Mostly Cloudy

    • 24
    • 39

    Mostly Cloudy

    • 23
    • 39

    Partly Sunny

Today 22 Jan St. Charles

Mostly cloudy in the Morning, then becoming partly sunny. Not as cool with Highs in the mid 30s. South Winds 10 to 15 Mph with Gusts up to 25 Mph. Wind chill Values as low as 1 below in the morning.

Tonight 22 Jan St. Charles

Mostly cloudy with a chance of Flurries. Not as cool. Near steady temperature in the mid 20s. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming west after midnight.

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Saint Charles Temperature Statistics

January Temperature

St. Louis Lambert International Airport (6.2 miles)

  • Lowest 19 January, 2025

    7 °F

  • Average January

    28.8 °F

  • Highest 17 January, 2025

    56.6 °F

Climate (2020–Present)

St. Louis Lambert International Airport (6.2 miles)

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  • Average Low 2020–2025

    50.3 °F

  • Average 2020–2025

    59.5 °F

  • Average High 2020–2025

    68.8 °F
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