St Charles Weather Forecast

    • 4
    • 20

    Mostly Sunny

    • 21
    • 30

    Mostly Cloudy

    • 27
    • 38

    Mostly Cloudy

    • 23
    • 37

    Chance Rain/Snow

    • 17
    • 31

    Mostly Cloudy

    • 29
    • 37

    Partly Sunny

Today 31 Jan St. Charles

Mostly sunny. Highs around 20. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Wind chill Values as low as 11 below in the morning.

Tonight 31 Jan St. Charles

Mostly clear in the Evening, then becoming partly cloudy. Cold with Lows around 2 above. West Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

St Charles Temperature Statistics

January Temperature

St. Louis Lambert International Airport (7.5 miles)

  • Lowest 26 January, 2026

    -4 °F

  • Average January

    32.3 °F

  • Highest 6 January, 2026

    68.6 °F

Climate (2021–Present)

St. Louis Lambert International Airport (7.5 miles)

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  • Average Low 2021–2026

    50.4 °F

  • Average 2021–2026

    59.8 °F

  • Average High 2021–2026

    69.2 °F
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