Greenville Weather Forecast

    • 53
    • 72

    Decreasing Clouds

    • 56
    • 70

    Mostly Cloudy

    • 55
    • 69

    Mostly Cloudy

    • 56
    • 73

    Mostly Cloudy

    • 60
    • 73

    Mostly Cloudy

    • 60
    • 74

    Chance Rain Showers

    • 54
    • 71

    Chance Rain Showers

Today 26 Sep Mercer

Mostly sunny. Near steady temperature in the upper 60s. North Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 26 Sep Mercer

Partly cloudy. Lows in the lower 50s. North Winds 10 to 15 Mph.

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Greenville Temperature Statistics

September Temperature

Port Meadville Airport (17.4 miles)

  • Lowest 24 September, 2026

    46.9 °F

  • Average September

    65.9 °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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