Frost dates in Grand Haven, MI
The average last spring frost in Grand Haven is around April 28 and the first fall frost is around October 19. That gives Grand Haven an average growing season of about 174 days.
Last spring frost
| Early (10% chance after) | April 16 |
|---|---|
| Average (50%) | April 28 |
| Late (90%) | May 12 |
First fall frost
| Early (10%) | October 5 |
|---|---|
| Average (50%) | October 19 |
| Late (90% chance before) | November 2 |