Greenville Weather Forecast
- 59
- 80
Rain Showers
- 49
- 70
Partly Sunny
- 51
- 75
Mostly Sunny
- 59
- 81
Partly Sunny
- 62
- 83
Partly Sunny
- 64
- 84
Chance Thunderstorms
Today 21 Jul Mercer
Showers with a chance of Thunderstorms Early, then scattered Thunderstorms and Showers likely. Some Thunderstorms may be severe. Highs in the upper 70s. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain near 100 percent.
Tonight 21 Jul Mercer
Mostly cloudy. Showers likely with a chance of Thunderstorms in the Evening, then a chance of Showers with a slight chance of Thunderstorms after midnight. Humid with Lows in the upper 50s. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming northwest after midnight. Chance of rain 70 percent.
Greenville Temperature Statistics
July Temperature
Port Meadville Airport (17.4 miles)
Lowest 19 July, 2026
60.1 °FAverage July
74.9 °FHighest 1 July, 2026
91 °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
59.3 °F