Marais Temps Clair Conservation Area Weather Forecast

    • 37
    • 73

    Mostly Sunny

    • 28
    • 64

    Partly Sunny

    • 31
    • 46

    Rain/Snow

    • 35
    • 43

    Rain Likely

    • 40
    • 52

    Rain Likely

    • 49
    • 61

    Rain Likely

Today 27 Feb St. Charles

Sunny. Not as cool with Highs in the lower 70s. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 27 Feb St. Charles

Mostly clear. Lows around 40. West Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming north after midnight.

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Marais Temps Clair Conservation Area Temperature Statistics

February Temperature

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

  • Lowest 1 February, 2026

    -5.4 °F

  • Average February

    37.8 °F

  • Highest 18 February, 2026

    72.6 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    57.8 °F

  • Average High 2021–2026

    68.7 °F
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