Greenville Weather Forecast

    • 53
    • 75

    Decreasing Clouds

    • 61
    • 76

    Mostly Cloudy

    • 62
    • 81

    Rain Showers Likely

    • 51
    • 74

    Rain Showers

    • 51
    • 67

    Chance Rain Showers

    • 45
    • 69

    Chance Rain Showers

Today 29 Sep Mercer

Considerable cloudiness this Morning, then becoming partly cloudy. Patchy fog this morning. Highs in the mid 70s. Southwest Winds around 5 Mph.

Tonight 29 Sep Mercer

Mainly clear. Patchy fog. Lows in the lower 50s. South Winds around 5 Mph.

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Greenville Temperature Statistics

September Temperature

Port Meadville Airport (17.4 miles)

  • Lowest 25 September, 2026

    41 °F

  • Average September

    64.9 °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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