Lake Saint Louis Weather Forecast

    • 17
    • 39

    Chance Rain/Snow

    • 28
    • 36

    Partly Sunny

    • 19
    • 44

    Mostly Cloudy

    • 9
    • 27

    Partly Sunny

    • 15
    • 26

    Mostly Sunny

    • 12
    • 31

    Mostly Sunny

Today 14 Jan St. Charles

Partly sunny. Much cooler with Highs in the upper 30s. Temperature falling into the lower 30s this afternoon. Northwest Winds 15 to 20 Mph with Gusts up to 35 Mph.

Tonight 14 Jan St. Charles

Clear. Much cooler with Lows around 18. Northwest Winds 10 to 15 Mph. Gusts up to 30 Mph in the evening.

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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

    42.2 °F

  • Highest 6 January, 2026

    68 °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

    57.2 °F

  • Average High 2021–2026

    68.4 °F
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