Greenville Weather Forecast

    • 49
    • 69

    Increasing Clouds

    • 51
    • 70

    Partly Sunny

    • 52
    • 69

    Partly Sunny

    • 51
    • 69

    Partly Sunny

    • 53
    • 71

    Partly Sunny

    • 60
    • 74

    Chance Rain Showers

Today 25 Sep Mercer

Mostly sunny. Highs in the upper 60s. Northeast Winds around 5 Mph, becoming north 10 to 15 Mph in the afternoon.

Tonight 25 Sep Mercer

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the upper 40s. North Winds 5 to 10 Mph.

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Greenville Temperature Statistics

September Temperature

Port Meadville Airport (17.4 miles)

  • Lowest 22 September, 2026

    51.1 °F

  • Average September

    66.8 °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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