Greenville Weather Forecast
- 53
- 63
Chance Rain Showers
- 49
- 65
Mostly Cloudy
- 44
- 67
Mostly Sunny
- 48
- 67
Mostly Sunny
- 48
- 69
Mostly Sunny
- 50
- 70
Partly Sunny
Today 22 Sep Mercer
Patchy fog early. Considerable cloudiness with a 50 percent chance of Showers. Near steady temperature around 60. East Winds 10 to 15 Mph with Gusts up to 25 Mph.
Tonight 22 Sep Mercer
Mostly cloudy. A chance of Showers in the evening. Lows in the lower 50s. East Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 40 percent.
Greenville Temperature Statistics
September Temperature
Port Meadville Airport (17.4 miles)
Lowest 7 September, 2026
52 °FAverage September
67.8 °FHighest 2 September, 2026
87.1 °F
Climate (2021–2026)
Port Meadville Airport (17.4 miles)
Average Low 2021–2026
42.7 °FAverage 2021–2026
50.9 °FAverage High 2021–2026
59.2 °F