Marais Temps Clair Conservation Area Weather Forecast

    • 70
    • 87

    Thunderstorms

    • 65
    • 86

    Becoming Sunny

    • 68
    • 88

    Mostly Sunny

    • 72
    • 91

    Mostly Sunny

    • 75
    • 93

    Partly Sunny

    • 75
    • 93

    Chance Thunderstorms

    • 73
    • 91

    Chance Thunderstorms

Today 30 Jun St. Charles

Partly sunny with scattered Showers and Thunderstorms. Near steady temperature in the upper 80s. West Winds 5 to 10 Mph. Chance of rain 50 percent.

Tonight 30 Jun St. Charles

Mostly cloudy. Numerous Showers and scattered Thunderstorms this Evening, then isolated Showers and Thunderstorms after midnight. Lows around 70. Northwest Winds 5 to 10 Mph. Chance of rain 60 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Marais Temps Clair Conservation Area Temperature Statistics

June Temperature

St. Charles, St. Charles County Smartt Airport (1.9 miles)

  • Lowest 10 June, 2025

    57.7 °F

  • Average June

    76.6 °F

  • Highest 21 June, 2025

    96.7 °F

Climate (2020–Present)

St. Charles, St. Charles County Smartt Airport (1.9 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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