St Charles Weather Forecast

    • 39
    • 64

    Mostly Cloudy

    • 50
    • 66

    Partly Sunny

    • 31
    • 62

    Mostly Cloudy

    • 32
    • 48

    Mostly Cloudy

    • 35
    • 55

    Mostly Cloudy

    • 42
    • 54

    Mostly Cloudy

Today 20 Mar Kane

Mostly cloudy. Highs in the mid 60s. Temperature falling into the upper 50s in the afternoon. West Winds 10 to 15 Mph, becoming northwest in the afternoon.

Tonight 20 Mar Kane

Mostly cloudy. Lows in the upper 30s. Northeast Winds 5 to 10 Mph, becoming east after midnight.

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St Charles Temperature Statistics

March Temperature

Chicago / West Chicago, Dupage Airport (3.1 miles)

  • Lowest 1 March, 2026

    17.7 °F

  • Average March

    41.1 °F

  • Highest 9 March, 2026

    72 °F

Climate (2021–Present)

Chicago / West Chicago, Dupage Airport (3.1 miles)

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  • Average Low 2021–2026

    42.2 °F

  • Average 2021–2026

    51.9 °F

  • Average High 2021–2026

    61.5 °F
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