Frost dates in Hermitage, PA
The average last spring frost in Hermitage is around May 18 and the first fall frost is around September 28. That gives Hermitage an average growing season of about 133 days.
Last spring frost
| Early (10% chance after) | April 29 |
|---|---|
| Average (50%) | May 18 |
| Late (90%) | June 5 |
First fall frost
| Early (10%) | September 11 |
|---|---|
| Average (50%) | September 28 |
| Late (90% chance before) | October 17 |