Greenville Weather Forecast

    • 72
    • 91

    Rain Showers Likely

    • 68
    • 88

    Rain Showers Likely

    • 62
    • 82

    Chance Thunderstorms

    • 58
    • 78

    Mostly Sunny

    • 59
    • 78

    Partly Sunny

    • 58
    • 78

    Partly Sunny

Today 2 Sep Mercer

Partly sunny in the Morning, then becoming partly cloudy. A chance of Thunderstorms. A chance of Showers. Hot with Highs in the lower 90s. Southwest Winds 5 to 10 Mph. Chance of rain 50 percent. Heat index Values up to 100 in the afternoon.

Tonight 2 Sep Mercer

Mostly cloudy in the Evening, then becoming partly cloudy. A chance of Showers and Thunderstorms. Warm with Lows in the lower 70s. South Winds 5 to 10 Mph. Chance of rain 50 percent.

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Greenville Temperature Statistics

September Temperature

Port Meadville Airport (17.4 miles)

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Climate (2021–2026)

Port Meadville Airport (17.4 miles)

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  • Average Low 2021–2026

    42.6 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    59.2 °F
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