Frost dates in Greenfield, MA
The average last spring frost in Greenfield is around May 1 and the first fall frost is around October 14. That gives Greenfield an average growing season of about 166 days.
Last spring frost
| Early (10% chance after) | April 22 |
|---|---|
| Average (50%) | May 1 |
| Late (90%) | May 15 |
First fall frost
| Early (10%) | October 5 |
|---|---|
| Average (50%) | October 14 |
| Late (90% chance before) | October 25 |