Greenville Weather Forecast

    • 51
    • 63

    Chance Rain Showers

    • 49
    • 63

    Chance Rain Showers

    • 44
    • 66

    Mostly Sunny

    • 46
    • 67

    Mostly Sunny

    • 47
    • 67

    Partly Sunny

    • 50
    • 69

    Partly Sunny

Today 22 Sep Mercer

Considerable cloudiness. A slight chance of Showers in the Morning, then a chance of Showers in the afternoon. Highs in the lower 60s. East Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 50 percent.

Tonight 22 Sep Mercer

Considerable cloudiness with a 50 percent chance of Showers. Lows in the lower 50s. East Winds 10 to 15 Mph with Gusts up to 25 Mph.

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Greenville Temperature Statistics

September Temperature

Port Meadville Airport (17.4 miles)

  • Lowest 7 September, 2026

    52 °F

  • Average September

    68.1 °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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