Defiance Weather Forecast

    • 57
    • 76

    Chance Thunderstorms

    • 55
    • 73

    Chance Thunderstorms

    • 58
    • 75

    Chance Rain Showers

    • 58
    • 78

    Chance Thunderstorms

    • 53
    • 78

    Slight Chance Thunderstorms

    • 51
    • 70

    Mostly Sunny

Today 18 Sep Shelby

Mostly cloudy. Patchy fog early this morning. A slight chance of Showers this morning. A chance of Showers and Thunderstorms this afternoon. Highs in the mid 70s. Light and variable Winds, becoming south 5 to 10 Mph. Chance of rain 50 percent.

Tonight 18 Sep Shelby

Mostly cloudy with a chance of Showers. A chance of Thunderstorms, mainly in the evening. Lows in the upper 50s. South Winds around 5 Mph. Chance of rain 50 percent.

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Defiance Temperature Statistics

September Temperature

Denison (10.6 miles)

  • Lowest 6 September, 2025

    39.2 °F

  • Average September

    66.2 °F

  • Highest 13 September, 2025

    95 °F

Climate (2020–Present)

Denison (10.6 miles)

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  • Average Low 2020–2025

    39.6 °F

  • Average 2020–2025

    50.5 °F

  • Average High 2020–2025

    61.1 °F
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