Wentzville Weather Forecast

    • 40
    • 67

    Decreasing Clouds

    • 51
    • 69

    Mostly Sunny

    • 57
    • 78

    Mostly Sunny

    • 59
    • 79

    Mostly Sunny

    • 61
    • 82

    Rain Showers

    • 51
    • 74

    Chance Thunderstorms

    • 49
    • 69

    Chance Rain Showers

Today 19 Apr St. Charles

Sunny. Not as cool with Highs in the upper 60s. West Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 19 Apr St. Charles

Partly cloudy. Lows in the lower 40s. North Winds 10 to 15 Mph, becoming northeast around 5 Mph after midnight.

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Wentzville Temperature Statistics

April Temperature

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

  • Lowest 6 April, 2026

    35.7 °F

  • Average April

    64.9 °F

  • Highest 14 April, 2026

    89.7 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    46 °F

  • Average 2021–2026

    57.3 °F

  • Average High 2021–2026

    68.8 °F
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