St. Charles County Smartt Airport Weather Forecast

    • 62
    • 72

    Rain Showers

    • 55
    • 74

    Rain Showers

    • 46
    • 72

    Chance Rain Showers

    • 47
    • 68

    Mostly Sunny

    • 49
    • 73

    Mostly Sunny

    • 54
    • 77

    Mostly Sunny

Today 30 Apr St. Charles

Patchy fog in the morning. Scattered Thunderstorms. Showers. Highs in the lower 70s. Southeast Winds 5 to 10 Mph. Chance of rain 80 percent.

Tonight 30 Apr St. Charles

Scattered Thunderstorms. Showers. Lows in the lower 60s. South Winds 5 to 10 Mph. Chance of rain 80 percent.

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St. Charles County Smartt Airport Temperature Statistics

April Temperature

St. Charles, St. Charles County Smartt Airport (0 miles)

  • Lowest 8 April, 2025

    29.8 °F

  • Average April

    57.2 °F

  • Highest 13 April, 2025

    83.6 °F

Climate (2020–Present)

St. Charles, St. Charles County Smartt Airport (0 miles)

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  • Average Low 2020–2025

    47.3 °F

  • Average 2020–2025

    57.6 °F

  • Average High 2020–2025

    68.3 °F
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