Harrisville Weather Forecast

    • 52
    • 78

    Mostly Sunny

    • 62
    • 82

    Partly Sunny

    • 66
    • 85

    Rain Showers

    • 54
    • 76

    Chance Thunderstorms

    • 54
    • 74

    Partly Sunny

    • 61
    • 80

    Partly Sunny

Today 7 Sep Butler

Mostly sunny. Highs in the upper 70s. East Winds around 5 Mph.

Tonight 7 Sep Butler

Mainly clear. Lows in the lower 50s. East Winds around 5 Mph.

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Harrisville Temperature Statistics

September Temperature

Franklin, Venango Regional Airport (18 miles)

  • Lowest 5 September, 2026

    57.9 °F

  • Average September

    72 °F

  • Highest 2 September, 2026

    87.1 °F

Climate (2021–2026)

Franklin, Venango Regional Airport (18 miles)

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  • Average Low 2021–2026

    40.7 °F

  • Average 2021–2026

    49.4 °F

  • Average High 2021–2026

    58.2 °F
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