Lake St Louis Weather Forecast

    • 56
    • 82

    Mostly Sunny

    • 59
    • 83

    Mostly Sunny

    • 63
    • 82

    Chance Rain Showers

    • 65
    • 84

    Chance Thunderstorms

    • 65
    • 84

    Rain Showers Likely

    • 63
    • 80

    Rain Showers Likely

    • 61
    • 78

    Chance Rain Showers

Today 24 May St. Charles

Sunny. Near steady temperature in the upper 70s. North Winds 5 to 10 Mph.

Tonight 24 May St. Charles

Mostly clear. Lows in the upper 50s. Northeast Winds around 5 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake St Louis Temperature Statistics

May Temperature

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

  • Lowest 7 May, 2026

    36.6 °F

  • Average May

    62.6 °F

  • Highest 17 May, 2026

    86.6 °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

    57.4 °F

  • Average High 2021–2026

    68.8 °F
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