Greenville Weather Forecast
- 50
- 68
Increasing Clouds
- 54
- 71
Partly Sunny
- 56
- 69
Mostly Cloudy
- 53
- 68
Mostly Cloudy
- 54
- 71
Partly Sunny
- 58
- 72
Slight Chance Rain Showers
Today 25 Sep Mercer
Mostly sunny. Near steady temperature in the upper 60s. North Winds 5 to 10 Mph with Gusts up to 20 Mph.
Tonight 25 Sep Mercer
Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the upper 40s. North Winds 5 to 10 Mph.
Greenville Temperature Statistics
September Temperature
Port Meadville Airport (17.4 miles)
Lowest 22 September, 2026
51.1 °FAverage September
66.4 °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