Lake St Louis Weather Forecast

    • 34
    • 52

    Chance Rain

    • 35
    • 56

    Mostly Sunny

    • 41
    • 70

    Mostly Sunny

    • 30
    • 61

    Chance Rain

    • 31
    • 45

    Rain/Snow Likely

    • 29
    • 41

    Chance Thunderstorms

Today 25 Feb St. Charles

Mostly cloudy. Near steady temperature in the lower 50s. North Winds around 5 Mph.

Tonight 25 Feb St. Charles

Mostly cloudy with a 50 percent chance of rain. Lows in the mid 30s. Northeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake St Louis Temperature Statistics

February Temperature

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

  • Lowest 1 February, 2026

    -7.3 °F

  • Average February

    38 °F

  • Highest 18 February, 2026

    73.7 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    57.2 °F

  • Average High 2021–2026

    68.5 °F
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