Cottleville Weather Forecast

    • 77
    • 97

    Hot

    • 76
    • 96

    Mostly Sunny

    • 77
    • 93

    Slight Chance Thunderstorms

    • 76
    • 94

    Slight Chance Thunderstorms

    • 75
    • 96

    Mostly Sunny

    • 77
    • 97

    Mostly Sunny

Today 23 Jul St. Charles

Sunny. A slight chance of Showers and Thunderstorms this afternoon. Hot with Highs in the upper 90s. South Winds around 5 Mph. Chance of rain 20 percent. Heat index Values up to 115.

Tonight 23 Jul St. Charles

Mostly clear. Humid with Lows in the upper 70s. South Winds around 5 Mph. Heat index Values up to 111 early in the evening.

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Cottleville Temperature Statistics

July Temperature

St. Louis, Spirit Of St. Louis Airport (6.2 miles)

  • Lowest 2 July, 2025

    62.7 °F

  • Average July

    80.2 °F

  • Highest 16 July, 2025

    95.6 °F

Climate (2020–Present)

St. Louis, Spirit Of St. Louis Airport (6.2 miles)

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  • Average Low 2020–2025

    45.8 °F

  • Average 2020–2025

    56.8 °F

  • Average High 2020–2025

    68 °F
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