Defiance Weather Forecast

    • 45
    • 62

    Rain Showers Likely

    • 46
    • 64

    Mostly Cloudy

    • 46
    • 64

    Partly Sunny

    • 54
    • 74

    Chance Rain Showers

    • 53
    • 68

    Chance Rain Showers

    • 49
    • 71

    Chance Rain Showers

Today 3 May St. Charles

A chance of Showers this Morning, then Showers with a slight chance of Thunderstorms this afternoon. Highs around 60. Northwest Winds 10 to 15 Mph. Chance of rain 90 percent.

Tonight 3 May St. Charles

Mostly cloudy. Showers likely with a slight chance of Thunderstorms in the Evening, then a chance of Showers after midnight. Lows in the mid 40s. North Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Defiance Temperature Statistics

May Temperature

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

  • Lowest 1 May, 2025

    62.1 °F

  • Average May

    67.4 °F

  • Highest 1 May, 2025

    75.9 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    45.8 °F

  • Average 2020–2025

    56.8 °F

  • Average High 2020–2025

    68 °F
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