Greenville Weather Forecast

    • 63
    • 77

    Slight Chance Rain Showers

    • 55
    • 75

    Increasing Clouds

    • 63
    • 74

    Rain Showers

    • 55
    • 72

    Rain Showers

    • 55
    • 67

    Chance Rain Showers

    • 53
    • 64

    Chance Rain Showers

    • 52
    • 67

    Chance Rain Showers

Today 17 Sep Mercer

Partly sunny. A chance of Showers in the morning. Highs in the upper 60s. Chance of rain 40 percent.

Tonight 17 Sep Mercer

Mostly cloudy. Lows in the lower 60s. Northwest Winds around 5 Mph.

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Greenville Temperature Statistics

September Temperature

Port Meadville Airport (17.4 miles)

  • Lowest 7 September, 2026

    52 °F

  • Average September

    68.3 °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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