Frost dates in Calais, ME
The average last spring frost in Calais is around May 10 and the first fall frost is around October 11. That gives Calais an average growing season of about 154 days.
Last spring frost
| Early (10% chance after) | April 23 |
|---|---|
| Average (50%) | May 10 |
| Late (90%) | May 23 |
First fall frost
| Early (10%) | September 29 |
|---|---|
| Average (50%) | October 11 |
| Late (90% chance before) | October 27 |