Port Union Weather Forecast

    • 45
    • 73

    Becoming Sunny

    • 47
    • 75

    Sunny

    • 53
    • 80

    Mostly Sunny

    • 56
    • 85

    Mostly Sunny

    • 57
    • 86

    Mostly Sunny

    • 55
    • 86

    Mostly Sunny

Today 7 Sep Butler

Partly cloudy early this Morning, then clearing. Highs in the lower 70s. Northwest Winds 5 to 10 Mph.

Tonight 7 Sep Butler

Clear. Lows in the mid 40s. North Winds around 5 Mph.

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Port Union Temperature Statistics

September Temperature

Butler County Regional Airport (3.1 miles)

  • Lowest 1 September, 2025

    46 °F

  • Average September

    66.4 °F

  • Highest 2 September, 2025

    84 °F

Climate (2020–Present)

Butler County Regional Airport (3.1 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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