Greenville Weather Forecast

    • 48
    • 68

    Rain Showers

    • 53
    • 60

    Rain Showers

    • 58
    • 79

    Rain Showers Likely

    • 56
    • 79

    Mostly Cloudy

    • 59
    • 83

    Mostly Cloudy

    • 58
    • 84

    Partly Sunny

Today 22 May Mercer

Considerable cloudiness with a 20 percent chance of Showers. Near steady temperature in the mid 60s. East Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 22 May Mercer

A chance of Showers in the Evening, then Showers with a slight chance of Thunderstorms after midnight. Lows in the upper 40s. Southeast Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain near 100 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Greenville Temperature Statistics

May Temperature

Port Meadville Airport (17.4 miles)

  • Lowest 2 May, 2026

    33.1 °F

  • Average May

    53.5 °F

  • Highest 18 May, 2026

    86 °F

Climate (2021–Present)

Port Meadville Airport (17.4 miles)

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

  • Average Low 2021–2026

    42.7 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    59.2 °F
Get WillyWeather+ to remove ads