Greenville Weather Forecast

    • 54
    • 70

    Decreasing Clouds

    • 56
    • 68

    Mostly Cloudy

    • 55
    • 68

    Mostly Cloudy

    • 55
    • 73

    Mostly Cloudy

    • 59
    • 73

    Mostly Cloudy

    • 59
    • 74

    Chance Rain Showers

Today 26 Sep Mercer

Partly sunny in the Morning, then becoming mostly sunny. Highs around 70. North Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 26 Sep Mercer

Partly cloudy. Lows in the lower 50s. North Winds 10 to 15 Mph.

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Greenville Temperature Statistics

September Temperature

Port Meadville Airport (17.4 miles)

  • Lowest 22 September, 2026

    51.1 °F

  • Average September

    66.4 °F

  • Highest 2 September, 2026

    87.1 °F

Climate (2021–2026)

Port Meadville Airport (17.4 miles)

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  • Average Low 2021–2026

    42.7 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    59.2 °F
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