Frost dates in New Haven, CT
The average last spring frost in New Haven is around April 13 and the first fall frost is around October 27. That gives New Haven an average growing season of about 197 days.
Last spring frost
| Early (10% chance after) | April 3 |
|---|---|
| Average (50%) | April 13 |
| Late (90%) | April 26 |
First fall frost
| Early (10%) | October 10 |
|---|---|
| Average (50%) | October 27 |
| Late (90% chance before) | November 11 |