Greenville Weather Forecast

    • 65
    • 82

    Increasing Clouds

    • 67
    • 85

    Rain Showers

    • 56
    • 77

    Chance Rain Showers

    • 56
    • 76

    Mostly Sunny

    • 63
    • 81

    Slight Chance Rain Showers

    • 59
    • 80

    Slight Chance Rain Showers

Today 8 Sep Mercer

Partly sunny in the Morning, then becoming partly cloudy. Highs in the lower 80s. Southeast Winds around 5 Mph, becoming southwest in the afternoon.

Tonight 8 Sep Mercer

Mostly cloudy. Warm with Lows in the mid 60s. South Winds 5 to 10 Mph.

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Greenville Temperature Statistics

September Temperature

Port Meadville Airport (17.4 miles)

  • Lowest 5 September, 2026

    57.9 °F

  • Average September

    71.9 °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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