Lake St Louis Weather Forecast

    • 24
    • 42

    Breezy

    • 32
    • 39

    Mostly Cloudy

    • 20
    • 41

    Mostly Cloudy

    • 8
    • 32

    Mostly Cloudy

    • 14
    • 23

    Partly Sunny

    • 24
    • 39

    Mostly Cloudy

Today 10 Dec St. Charles

Partly sunny in the Morning, then becoming mostly cloudy. Breezy, cooler with Highs in the lower 40s. Northwest Winds 15 to 25 Mph. Gusts up to 45 Mph in the morning.

Tonight 10 Dec St. Charles

Mostly cloudy. Cooler with Lows in the mid 20s. Northwest Winds 5 to 10 Mph.

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  • Temperature Real-Time

Lake St Louis Temperature Statistics

December Temperature

St. Louis, Spirit Of St. Louis Airport (10.6 miles)

  • Lowest 5 December, 2025

    10 °F

  • Average December

    28.6 °F

  • Highest 6 December, 2025

    48.9 °F

Climate (2020–Present)

St. Louis, Spirit Of St. Louis Airport (10.6 miles)

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  • Average Low 2020–2025

    46 °F

  • Average 2020–2025

    57.1 °F

  • Average High 2020–2025

    68.2 °F
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