Saint Charles Weather Forecast

    • 38
    • 62

    Mostly Cloudy

    • 56
    • 65

    Mostly Cloudy

    • 22
    • 71

    Rain

    • 14
    • 29

    Mostly Sunny

    • 30
    • 38

    Mostly Cloudy

    • 40
    • 62

    Partly Sunny

Today 13 Mar St. Charles

Mostly sunny. Highs in the lower 60s. West Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 13 Mar St. Charles

Partly cloudy in the Evening, then clearing. Lows in the mid 30s. Northwest Winds 5 to 10 Mph, becoming northeast after midnight.

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Saint Charles Temperature Statistics

March Temperature

St. Louis Lambert International Airport (6.2 miles)

  • Lowest 1 March, 2026

    27 °F

  • Average March

    53.7 °F

  • Highest 10 March, 2026

    86 °F

Climate (2021–Present)

St. Louis Lambert International Airport (6.2 miles)

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  • Average Low 2021–2026

    50.6 °F

  • Average 2021–2026

    60 °F

  • Average High 2021–2026

    69.5 °F
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