Wentzville Weather Forecast

    • 3
    • 12

    Chance Snow

    • 8
    • 11

    Snow

    • -2
    • 14

    Slight Chance Snow

    • 7
    • 19

    Mostly Sunny

    • 14
    • 33

    Partly Sunny

    • 5
    • 26

    Partly Sunny

Today 23 Jan St. Charles

Partly sunny. Much cooler with Highs around 14. North Winds 15 to 20 Mph. Wind chill Values as low as 9 below.

Tonight 23 Jan St. Charles

Mostly cloudy. A chance of snow after midnight. Cold. Near steady temperature around 6 above. Northeast Winds 10 to 15 Mph. Chance of snow 40 percent. Wind chill Values as low as 11 below.

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Wentzville Temperature Statistics

January Temperature

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

  • Lowest 20 January, 2026

    7 °F

  • Average January

    37.5 °F

  • Highest 6 January, 2026

    68 °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

    68.4 °F
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