Lake St Louis Weather Forecast

    • 31
    • 59

    Becoming Sunny

    • 44
    • 55

    Mostly Sunny

    • 36
    • 61

    Mostly Cloudy

    • 51
    • 62

    Mostly Cloudy

    • 22
    • 65

    Rain

    • 17
    • 36

    Mostly Sunny

    • 33
    • 44

    Mostly Cloudy

Today 11 Mar St. Charles

Cloudy with a 50 percent chance of Showers. Much cooler with Highs in the lower 60s. Temperature falling into the mid 40s late. Northwest Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 11 Mar St. Charles

Mostly cloudy this Evening, then clearing. Much cooler with Lows in the lower 30s. Northwest Winds 15 to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake St Louis Temperature Statistics

March Temperature

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

  • Lowest 1 March, 2026

    27 °F

  • Average March

    52.1 °F

  • Highest 9 March, 2026

    82.9 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    46 °F

  • Average 2021–2026

    57.2 °F

  • Average High 2021–2026

    68.6 °F
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