Wentzville Weather Forecast

    • 4
    • 19

    Increasing Clouds

    • 3
    • 19

    Mostly Sunny

    • 21
    • 31

    Mostly Cloudy

    • 23
    • 37

    Mostly Cloudy

    • 26
    • 39

    Chance Rain

    • 20
    • 35

    Mostly Cloudy

Today 30 Jan St. Charles

Mostly sunny. A chance of Flurries this afternoon. Highs around 18. North Winds 10 to 15 Mph. Wind chill Values as low as 12 below this morning.

Tonight 30 Jan St. Charles

Mostly cloudy. A chance of Flurries in the evening. Cold with Lows around 4 above. North Winds around 10 Mph with Gusts up to 20 Mph. Wind chill Values as low as 9 below after midnight.

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Wentzville Temperature Statistics

January Temperature

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

  • Lowest 26 January, 2026

    -7.1 °F

  • Average January

    30.9 °F

  • Highest 6 January, 2026

    69.7 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    57.1 °F

  • Average High 2021–2026

    68.3 °F
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