Greenville Weather Forecast

    • 60
    • 78

    Increasing Clouds

    • 64
    • 79

    Rain Showers Likely

    • 58
    • 79

    Chance Rain Showers

    • 59
    • 73

    Mostly Cloudy

    • 63
    • 84

    Chance Rain Showers

    • 64
    • 81

    Chance Rain Showers

Today 11 Sep Mercer

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

Tonight 11 Sep Mercer

Mainly clear in the Evening, then becoming mostly cloudy. Lows around 60. East Winds around 5 Mph.

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Greenville Temperature Statistics

September Temperature

Port Meadville Airport (17.4 miles)

  • Lowest 7 September, 2026

    52 °F

  • Average September

    69.4 °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

    42.6 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    59.2 °F
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