Lake St Louis Weather Forecast

    • 63
    • 81

    Partly Sunny

    • 65
    • 83

    Chance Thunderstorms

    • 66
    • 85

    Rain Showers

    • 71
    • 83

    Rain Showers

    • 73
    • 90

    Chance Thunderstorms

    • 75
    • 96

    Mostly Sunny

    • 76
    • 97

    Mostly Sunny

Today 23 Jun St. Charles

Sunny. Not as cool with Highs in the lower 80s. Northeast Winds around 5 Mph.

Tonight 23 Jun St. Charles

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the lower 60s. East Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake St Louis Temperature Statistics

June Temperature

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

  • Lowest 3 June, 2026

    52.6 °F

  • Average June

    74.4 °F

  • Highest 9 June, 2026

    93.7 °F

Climate (2021–2026)

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

    68.9 °F
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