Greenville Weather Forecast

    • 57
    • 83

    Areas Fog

    • 59
    • 78

    Partly Sunny

    • 66
    • 80

    Rain Showers Likely

    • 58
    • 81

    Slight Chance Thunderstorms

    • 59
    • 74

    Partly Sunny

    • 63
    • 83

    Rain Showers Likely

    • 63
    • 79

    Chance Rain Showers

Today 10 Sep Mercer

Partly sunny. Near steady temperature in the upper 70s. West Winds 5 to 10 Mph.

Tonight 10 Sep Mercer

Mostly cloudy. Patchy fog. Lows in the upper 50s. North Winds 5 to 10 Mph, becoming northeast after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Greenville Temperature Statistics

September Temperature

Port Meadville Airport (17.4 miles)

  • Lowest 7 September, 2026

    52 °F

  • Average September

    69.4 °F

  • Highest 2 September, 2026

    87.1 °F

Climate (2021–2026)

Port Meadville Airport (17.4 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    42.6 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    59.2 °F
Get WillyWeather+ to remove ads