Greenville Weather Forecast
- 63
- 77
Slight Chance Rain Showers
- 55
- 75
Increasing Clouds
- 63
- 74
Rain Showers
- 55
- 72
Rain Showers
- 55
- 67
Chance Rain Showers
- 53
- 64
Chance Rain Showers
- 52
- 67
Chance Rain Showers
Today 17 Sep Mercer
Partly sunny. A chance of Showers in the morning. Highs in the upper 60s. Chance of rain 40 percent.
Tonight 17 Sep Mercer
Mostly cloudy. Lows in the lower 60s. Northwest Winds around 5 Mph.
Greenville Temperature Statistics
September Temperature
Port Meadville Airport (17.4 miles)
Lowest 7 September, 2026
52 °FAverage September
68.3 °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