Lake Saint Louis Weather Forecast

    • 32
    • 65

    Sunny

    • 45
    • 62

    Partly Sunny

    • 47
    • 63

    Rain

    • 37
    • 54

    Chance Rain

    • 24
    • 45

    Partly Sunny

    • 26
    • 37

    Mostly Sunny

    • 31
    • 50

    Mostly Sunny

Today 6 Jan St. Charles

Sunny. Highs in the mid 60s. West Winds 10 to 15 Mph.

Tonight 6 Jan St. Charles

Mostly clear. Much cooler with Lows in the lower 30s. West Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Saint Louis Temperature Statistics

January Temperature

St. Louis, Spirit Of St. Louis Airport (11.2 miles)

  • Lowest 4 January, 2026

    19 °F

  • Average January

    31.6 °F

  • Highest 4 January, 2026

    44.1 °F

Climate (2021–Present)

St. Louis, Spirit Of St. Louis Airport (11.2 miles)

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  • Average Low 2021–2026

    46 °F

  • Average 2021–2026

    57.1 °F

  • Average High 2021–2026

    68.3 °F
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