Kennett Square Weather Forecast

    • 57
    • 80

    Increasing Clouds

    • 59
    • 81

    Becoming Sunny

    • 60
    • 83

    Partly Sunny

    • 59
    • 82

    Partly Sunny

    • 57
    • 80

    Partly Sunny

    • 58
    • 79

    Mostly Cloudy

    • 59
    • 79

    Partly Sunny

Today 12 Sep Eastern Chester

Sunny. Highs around 80. Northeast Winds around 5 Mph.

Tonight 12 Sep Eastern Chester

Partly cloudy. Patchy fog after midnight. Lows in the upper 50s. South Winds around 5 Mph.

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Kennett Square Temperature Statistics

September Temperature

Chester County Airport (12.4 miles)

  • Lowest 9 September, 2025

    48.2 °F

  • Average September

    65.9 °F

  • Highest 6 September, 2025

    84.2 °F

Climate (2020–Present)

Chester County Airport (12.4 miles)

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  • Average Low 2020–2025

    46 °F

  • Average 2020–2025

    54.6 °F

  • Average High 2020–2025

    63.1 °F
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