South Shore Weather Forecast

    • 55
    • 82

    Thunderstorms

    • 35
    • 68

    Chance Rain/Snow

    • 38
    • 53

    Partly Sunny

    • 53
    • 71

    Mostly Sunny

    • 54
    • 77

    Mostly Cloudy

    • 35
    • 68

    Chance Rain Showers

Today 14 Mar St. Charles

Mostly sunny and windy. Highs around 80. South Winds 15 to 20 Mph with Gusts up to 35 Mph, increasing to 20 to 30 Mph with Gusts up to 50 Mph in the afternoon.

Tonight 14 Mar St. Charles

Mostly cloudy with Showers and Thunderstorms in the Evening, then mostly clear after midnight. Windy with Lows in the mid 50s. South Winds 20 to 30 Mph. Gusts up to 50 Mph, decreasing to 40 Mph after midnight. Chance of rain 90 percent.

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South Shore Temperature Statistics

March Temperature

St. Charles, St. Charles County Smartt Airport (6.2 miles)

  • Lowest 2 March, 2025

    19.9 °F

  • Average March

    47.7 °F

  • Highest 11 March, 2025

    77 °F

Climate (2020–Present)

St. Charles, St. Charles County Smartt Airport (6.2 miles)

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  • Average Low 2020–2025

    47.3 °F

  • Average 2020–2025

    57.5 °F

  • Average High 2020–2025

    68.1 °F
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