Defiance Weather Forecast

    • 52
    • 85

    Increasing Clouds

    • 33
    • 63

    Rain Showers

    • 46
    • 57

    Partly Sunny

    • 39
    • 65

    Mostly Cloudy

    • 49
    • 71

    Partly Sunny

    • 22
    • 62

    Chance Rain

Today 10 Mar St. Charles

Sunny. Highs in the lower 80s. South Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 10 Mar St. Charles

Mostly cloudy. A slight chance of Showers and Thunderstorms in the Evening, then Showers with Thunderstorms likely after midnight. Lows in the lower 50s. South Winds 15 to 20 Mph with Gusts up to 35 Mph. Chance of rain 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Defiance Temperature Statistics

March Temperature

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

  • Lowest 1 March, 2026

    27 °F

  • Average March

    49.9 °F

  • Highest 6 March, 2026

    79 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    46 °F

  • Average 2021–2026

    57.2 °F

  • Average High 2021–2026

    68.5 °F
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