Harrisville Weather Forecast

    • 67
    • 88

    Increasing Clouds

    • 64
    • 87

    Rain Showers

    • 43
    • 70

    Chance Rain Showers

    • 48
    • 67

    Partly Sunny

    • 54
    • 70

    Rain Showers Likely

    • 57
    • 73

    Rain Showers Likely

Today 18 May Butler

Sunny. Unseasonably warm with Highs in the upper 80s. Southwest Winds 5 to 10 Mph.

Tonight 18 May Butler

Mainly clear. Warm with Lows in the mid 60s. Southwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Harrisville Temperature Statistics

May Temperature

Franklin, Venango Regional Airport (18 miles)

  • Lowest 12 May, 2026

    30.9 °F

  • Average May

    49.4 °F

  • Highest 4 May, 2026

    71.1 °F

Climate (2021–Present)

Franklin, Venango Regional Airport (18 miles)

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  • Average Low 2021–2026

    40.6 °F

  • Average 2021–2026

    49.4 °F

  • Average High 2021–2026

    58.2 °F
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