Frost dates in York, PA
The average last spring frost in York is around May 1 and the first fall frost is around October 9. That gives York an average growing season of about 161 days.
Last spring frost
| Early (10% chance after) | April 14 |
|---|---|
| Average (50%) | May 1 |
| Late (90%) | May 16 |
First fall frost
| Early (10%) | September 27 |
|---|---|
| Average (50%) | October 9 |
| Late (90% chance before) | October 24 |