West Chester Weather Forecast

    • 59
    • 90

    Mostly Sunny

    • 62
    • 91

    Mostly Sunny

    • 64
    • 89

    Partly Sunny

    • 64
    • 87

    Slight Chance Thunderstorms

    • 63
    • 84

    Chance Rain Showers

    • 61
    • 83

    Chance Rain Showers

Today 18 Sep Butler

Mostly sunny. Hot with Highs around 90. Light and variable Winds, becoming northwest around 5 Mph in the afternoon.

Tonight 18 Sep Butler

Clear. Lows in the upper 50s. North Winds around 5 Mph in the Evening, becoming light and variable.

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West Chester Temperature Statistics

September Temperature

Butler County Regional Airport (5.6 miles)

  • Lowest 8 September, 2025

    42.1 °F

  • Average September

    65.2 °F

  • Highest 13 September, 2025

    88 °F

Climate (2020–Present)

Butler County Regional Airport (5.6 miles)

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  • Average Low 2020–2025

    44.3 °F

  • Average 2020–2025

    55.4 °F

  • Average High 2020–2025

    66.6 °F
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