Greenville Weather Forecast

    • 52
    • 66

    Chance Rain Showers

    • 51
    • 64

    Rain Showers Likely

    • 49
    • 63

    Chance Rain Showers

    • 46
    • 64

    Partly Sunny

    • 46
    • 68

    Partly Sunny

    • 49
    • 70

    Partly Sunny

Today 21 Sep Mercer

Considerable cloudiness. A slight chance of Showers in the Morning, then a chance of Showers in the afternoon. Highs in the mid 60s. East Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 50 percent.

Tonight 21 Sep Mercer

Considerable cloudiness with a 50 percent chance of Showers. Lows in the lower 50s. Northeast Winds 10 to 15 Mph.

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Greenville Temperature Statistics

September Temperature

Port Meadville Airport (17.4 miles)

  • Lowest 7 September, 2026

    52 °F

  • Average September

    68.5 °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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