Frost dates in Belfast, ME
The average last spring frost in Belfast is around May 9 and the first fall frost is around October 7. That gives Belfast an average growing season of about 151 days.
Last spring frost
| Early (10% chance after) | April 30 |
|---|---|
| Average (50%) | May 9 |
| Late (90%) | May 20 |
First fall frost
| Early (10%) | September 24 |
|---|---|
| Average (50%) | October 7 |
| Late (90% chance before) | October 19 |