Greenville, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Greenville, a borough in Mercer County, Pennsylvania.
This Afternoon
77°F
Sunny
Sunny, with a high near 77. Southwest wind 6 to 14 mph, with gusts as high as 25 mph.
7-day forecast for Greenville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 77°F | Sunny | 6 to 14 mph SW | 2% |
| Tonight | 56°F | Mostly Clear | 6 to 9 mph SE | 3% |
| Wednesday | 74°F | Partly Sunny then Chance Light Rain | 9 to 14 mph S | 33% |
| Wednesday Night | 58°F | Light Rain | 8 to 15 mph S | 100% |
| Thursday | 68°F | Chance Light Rain then Mostly Sunny | 7 to 14 mph SW | 27% |
| Thursday Night | 45°F | Partly Cloudy | 1 to 7 mph SW | 2% |
| Friday | 62°F | Partly Sunny then Slight Chance Light Rain | 1 to 8 mph W | 22% |
| Friday Night | 42°F | Chance Light Rain | 2 to 6 mph NW | 38% |
| Saturday | 54°F | Chance Light Rain | 7 to 12 mph W | 36% |
| Saturday Night | 35°F | Chance Light Rain | 2 to 8 mph W | 36% |
| Sunday | 54°F | Partly Sunny then Slight Chance Light Rain | 3 to 10 mph W | 22% |
| Sunday Night | 34°F | Chance Light Rain | 8 mph W | 25% |
| Monday | 56°F | Chance Light Rain | 7 to 13 mph W | 34% |
| Monday Night | 35°F | Chance Light Rain | 6 to 9 mph SW | 34% |
Forecast source: National Weather Service (api.weather.gov) for Greenville (41.405, -80.384). Updated through the day.
Growing snapshot for Greenville
Last spring frost
May 4
First fall frost
Oct 14
Growing season
161 days
Hardiness zone
6a
More local growing data for Greenville: nearby ZIP 16125 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Clark
Farrell
Fredonia
Grove City
Hermitage
Jackson Center
Lake Latonka
Mercer
New Lebanon
Reynolds Heights
Sandy Lake
Sharon
Sharpsville
Sheakleyville
Stoneboro
West Middlesex
Wheatland
Climate data from the nearest NOAA station, Jamestown 2 Nw, Pa (8.2 mi from Greenville). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.