Frost dates in South Haven, MI
The average last spring frost in South Haven is around April 26 and the first fall frost is around October 21. That gives South Haven an average growing season of about 178 days.
Last spring frost
| Early (10% chance after) | April 10 |
|---|---|
| Average (50%) | April 26 |
| Late (90%) | May 14 |
First fall frost
| Early (10%) | October 1 |
|---|---|
| Average (50%) | October 21 |
| Late (90% chance before) | November 8 |