Greenville Weather Forecast

    • 58
    • 83

    Chance Rain Showers

    • 47
    • 66

    Rain Showers

    • 51
    • 76

    Chance Rain Showers

    • 45
    • 67

    Slight Chance Rain Showers

    • 43
    • 66

    Partly Sunny

    • 44
    • 67

    Mostly Sunny

    • 50
    • 73

    Partly Sunny

Today 3 Sep Mercer

Mostly sunny. Near steady temperature in the upper 70s. Southwest Winds around 10 Mph.

Tonight 3 Sep Mercer

Mainly clear this Evening, then becoming mostly cloudy. A chance of Showers with a slight chance of Thunderstorms after midnight. Lows in the upper 50s. South Winds 5 to 10 Mph. Chance of rain 40 percent.

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Greenville Temperature Statistics

September Temperature

Port Meadville Airport (17.4 miles)

  • Lowest 1 September, 2025

    52 °F

  • Average September

    62.9 °F

  • Highest 1 September, 2025

    75 °F

Climate (2020–Present)

Port Meadville Airport (17.4 miles)

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  • Average Low 2020–2025

    43 °F

  • Average 2020–2025

    51 °F

  • Average High 2020–2025

    59.2 °F
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