South Shore Weather Forecast

    • 55
    • 81

    Thunderstorms

    • 36
    • 70

    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 this afternoon.

Tonight 14 Mar St. Charles

Showers with Thunderstorms likely in the Evening, then partly cloudy with a chance of Thunderstorms after midnight. Some Thunderstorms may be severe. Some Thunderstorms may be severe. Windy with Lows in the upper 50s. South Winds 20 to 30 Mph with Gusts up to 50 Mph, Diminishing to 15 to 20 Mph with Gusts up to 40 Mph after midnight. Chance of rain near 100 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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