Defiance Weather Forecast

    • 11
    • 29

    Mostly Cloudy

    • 3
    • 17

    Partly Sunny

    • 5
    • 21

    Partly Sunny

    • 8
    • 18

    Mostly Sunny

    • 24
    • 37

    Mostly Cloudy

    • 20
    • 38

    Mostly Cloudy

Today 18 Jan St. Charles

Mostly cloudy. Much cooler with Highs in the upper 20s. North Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 18 Jan St. Charles

Mostly cloudy. Much cooler with Lows around 13. North Winds 10 to 15 Mph with Gusts up to 25 Mph. Wind chill Values as low as 1 below.

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Defiance Temperature Statistics

January Temperature

St. Louis, Spirit Of St. Louis Airport (6.8 miles)

  • Lowest 9 January, 2025

    0.8 °F

  • Average January

    25.2 °F

  • Highest 2 January, 2025

    46.7 °F

Climate (2020–Present)

St. Louis, Spirit Of St. Louis Airport (6.8 miles)

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  • Average Low 2020–2025

    46 °F

  • Average 2020–2025

    56.8 °F

  • Average High 2020–2025

    67.8 °F
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