Greenville Weather Forecast

    • 54
    • 77

    Becoming Sunny

    • 54
    • 78

    Partly Sunny

    • 65
    • 82

    Partly Sunny

    • 66
    • 87

    Rain Showers Likely

    • 56
    • 76

    Slight Chance Thunderstorms

    • 53
    • 74

    Mostly Sunny

Today 6 Sep Mercer

Mostly sunny. Highs in the upper 70s. Northeast Winds 5 to 10 Mph.

Tonight 6 Sep Mercer

Mainly clear. Lows in the mid 50s. Northeast Winds 5 to 10 Mph.

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Greenville Temperature Statistics

September Temperature

Port Meadville Airport (17.4 miles)

  • Lowest 4 September, 2026

    66 °F

  • Average September

    72.9 °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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