St Charles Weather Forecast

    • 35
    • 58

    Chance Rain Showers

    • 31
    • 54

    Partly Sunny

    • 32
    • 57

    Mostly Sunny

    • 43
    • 67

    Partly Sunny

    • 41
    • 66

    Partly Sunny

    • 42
    • 66

    Mostly Sunny

Today 29 Apr Gregory

Partly sunny with a chance of Showers with a slight chance of Thunderstorms. Not as cool. Near steady temperature in the upper 50s. West Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 40 percent.

Tonight 29 Apr Gregory

Mostly cloudy with a chance of rain Showers with a slight chance of Thunderstorms in the Evening, then partly cloudy after midnight. Lows in the mid 30s. Northwest Winds 5 to 10 Mph. Chance of rain 50 percent.

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St Charles Temperature Statistics

April Temperature

Winner, Bob Wiley Field Airport (42.9 miles)

  • Lowest 10 April, 2026

    21 °F

  • Average April

    45.1 °F

  • Highest 16 April, 2026

    84 °F

Climate (2021–Present)

Winner, Bob Wiley Field Airport (42.9 miles)

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  • Average Low 2021–2026

    39.7 °F

  • Average 2021–2026

    51.5 °F

  • Average High 2021–2026

    63.7 °F
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