Greenville Weather Forecast

    • 63
    • 74

    Rain Showers

    • 63
    • 80

    Chance Rain Showers

    • 46
    • 70

    Rain Showers

    • 47
    • 67

    Mostly Sunny

    • 50
    • 70

    Partly Sunny

    • 39
    • 62

    Mostly Sunny

    • 40
    • 60

    Mostly Sunny

Today 30 Sep Mercer

Mostly sunny. Highs in the mid 60s.

Tonight 30 Sep Mercer

Considerable cloudiness with isolated Showers. Mild. Near steady temperature in the mid 60s. South Winds 5 to 10 Mph. Chance of rain 20 percent.

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Greenville Temperature Statistics

September Temperature

Port Meadville Airport (17.4 miles)

  • Lowest 25 September, 2026

    41 °F

  • Average September

    64.7 °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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