Wentzville Weather Forecast

    • 58
    • 76

    Gradual Clearing

    • 63
    • 81

    Mostly Sunny

    • 64
    • 83

    Rain Showers Likely

    • 63
    • 83

    Chance Thunderstorms

    • 67
    • 82

    Rain Showers Likely

    • 72
    • 88

    Slight Chance Thunderstorms

Today 22 Jun St. Charles

Mostly cloudy. Highs in the mid 70s. North Winds 5 to 10 Mph.

Tonight 22 Jun St. Charles

Mostly cloudy. Lows in the lower 60s. Northwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

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Wentzville Temperature Statistics

June Temperature

St. Louis, Spirit Of St. Louis Airport (14.9 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 (14.9 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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