Greenville Weather Forecast

    • 53
    • 63

    Chance Rain Showers

    • 49
    • 65

    Mostly Cloudy

    • 44
    • 67

    Mostly Sunny

    • 48
    • 67

    Mostly Sunny

    • 48
    • 69

    Mostly Sunny

    • 50
    • 70

    Partly Sunny

Today 22 Sep Mercer

Patchy fog early. Considerable cloudiness with a 50 percent chance of Showers. Near steady temperature around 60. East Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 22 Sep Mercer

Mostly cloudy. A chance of Showers in the evening. Lows in the lower 50s. East Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 40 percent.

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Greenville Temperature Statistics

September Temperature

Port Meadville Airport (17.4 miles)

  • Lowest 7 September, 2026

    52 °F

  • Average September

    67.8 °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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