Frost dates in New Haven, MI
The average last spring frost in New Haven is around April 30 and the first fall frost is around October 18. That gives New Haven an average growing season of about 171 days.
Last spring frost
| Early (10% chance after) | April 12 |
|---|---|
| Average (50%) | April 30 |
| Late (90%) | May 22 |
First fall frost
| Early (10%) | September 28 |
|---|---|
| Average (50%) | October 18 |
| Late (90% chance before) | November 2 |