Westtown Weather Forecast

    • 58
    • 68

    Decreasing Clouds

    • 57
    • 79

    Mostly Sunny

    • 57
    • 79

    Partly Sunny

    • 58
    • 78

    Partly Sunny

    • 58
    • 79

    Slight Chance Thunderstorms

    • 56
    • 75

    Partly Sunny

    • 56
    • 76

    Partly Sunny

Today 10 Sep Eastern Chester

Mostly cloudy with a 20 percent chance of Showers. Highs in the mid 60s. Northeast Winds 5 to 10 Mph.

Tonight 10 Sep Eastern Chester

Mostly cloudy this Evening, then becoming partly cloudy. Lows in the upper 50s. North Winds around 5 Mph.

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Westtown Temperature Statistics

September Temperature

Chester County Airport (16.8 miles)

  • Lowest 8 September, 2025

    51.8 °F

  • Average September

    67 °F

  • Highest 6 September, 2025

    84.2 °F

Climate (2020–Present)

Chester County Airport (16.8 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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