Lake Saint Louis Weather Forecast

    • 62
    • 94

    Rain Showers

    • 63
    • 84

    Mostly Sunny

    • 67
    • 85

    Rain Showers

    • 59
    • 79

    Chance Rain Showers

    • 58
    • 75

    Slight Chance Thunderstorms

    • 61
    • 81

    Partly Sunny

Today 11 Jun St. Charles

Mostly sunny. Humid with Highs in the mid 90s. South Winds 15 to 20 Mph with Gusts up to 30 Mph. Heat index Values up to 107.

Tonight 11 Jun St. Charles

Mostly cloudy with a chance of Showers with a slight chance of Thunderstorms. Lows in the mid 70s. South Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Saint Louis Temperature Statistics

June Temperature

St. Louis, Spirit Of St. Louis Airport (11.2 miles)

  • Lowest 3 June, 2026

    52.6 °F

  • Average June

    74.6 °F

  • Highest 7 June, 2026

    87.7 °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

    57.4 °F

  • Average High 2021–2026

    68.9 °F
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