Frost dates in Johnstown, PA
The average last spring frost in Johnstown is around April 29 and the first fall frost is around October 19. That gives Johnstown an average growing season of about 173 days.
Last spring frost
| Early (10% chance after) | April 16 |
|---|---|
| Average (50%) | April 29 |
| Late (90%) | May 14 |
First fall frost
| Early (10%) | October 5 |
|---|---|
| Average (50%) | October 19 |
| Late (90% chance before) | October 31 |