Frost dates in Lancaster, PA
The average last spring frost in Lancaster is around April 19 and the first fall frost is around October 24. That gives Lancaster an average growing season of about 188 days.
Last spring frost
| Early (10% chance after) | March 30 |
|---|---|
| Average (50%) | April 19 |
| Late (90%) | April 29 |
First fall frost
| Early (10%) | October 10 |
|---|---|
| Average (50%) | October 24 |
| Late (90% chance before) | November 5 |