Lake St Louis Weather Forecast

    • 66
    • 76

    Rain Showers

    • 48
    • 81

    Rain Showers

    • 39
    • 56

    Mostly Cloudy

    • 38
    • 61

    Sunny

    • 41
    • 68

    Mostly Sunny

    • 45
    • 73

    Partly Sunny

    • 51
    • 76

    Mostly Sunny

Today 14 Oct St. Charles

Mostly clear. Lows around 50. Highs around 80.

Tonight 14 Oct St. Charles

Mostly cloudy. A slight chance of rain this Evening, then Showers likely with a chance of Thunderstorms after midnight. Lows in the upper 60s. Northeast Winds around 5 Mph. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake St Louis Temperature Statistics

October Temperature

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

  • Lowest 6 October, 2026

    42.7 °F

  • Average October

    67 °F

  • Highest 12 October, 2026

    91 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    46.1 °F

  • Average 2021–2026

    57.6 °F

  • Average High 2021–2026

    69 °F
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