Frost dates in Hartly, DE
The average last spring frost in Hartly is around April 10 and the first fall frost is around November 1. That gives Hartly an average growing season of about 205 days.
Last spring frost
| Early (10% chance after) | March 25 |
|---|---|
| Average (50%) | April 10 |
| Late (90%) | April 22 |
First fall frost
| Early (10%) | October 16 |
|---|---|
| Average (50%) | November 1 |
| Late (90% chance before) | November 13 |