Greenville, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Greenville, a borough in Mercer County, Pennsylvania.
Today
75°F
Partly Sunny then Light Rain Likely
Rain likely after 2pm. Partly sunny. High near 75, with temperatures falling to around 69 in the afternoon. South wind 5 to 14 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Greenville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Partly Sunny then Light Rain Likely | 5 to 14 mph S | 58% |
| Tonight | 57°F | Light Rain | 9 to 15 mph S | 98% |
| Thursday | 66°F | Partly Sunny | 7 to 14 mph SW | 5% |
| Thursday Night | 45°F | Mostly Cloudy | 2 to 7 mph SW | 3% |
| Friday | 60°F | Chance Light Rain | 2 to 8 mph SW | 47% |
| Friday Night | 39°F | Light Rain Likely | 3 to 7 mph W | 62% |
| Saturday | 52°F | Light Rain Likely | 7 to 13 mph W | 62% |
| Saturday Night | 33°F | Chance Light Rain | 5 to 9 mph W | 44% |
| Sunday | 53°F | Slight Chance Light Rain | 6 to 13 mph W | 15% |
| Sunday Night | 32°F | Partly Cloudy then Slight Chance Light Rain | 5 to 8 mph W | 15% |
| Monday | 56°F | Slight Chance Light Rain | 6 to 12 mph W | 22% |
| Monday Night | 33°F | Slight Chance Light Rain then Partly Cloudy | 7 mph SW | 15% |
| Tuesday | 59°F | Mostly Sunny | 7 to 13 mph SW | 8% |
| Tuesday Night | 32°F | Partly Cloudy | 2 to 7 mph W | 8% |
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 4, 2026.