Frost dates in Custer, MI
The average last spring frost in Custer is around May 11 and the first fall frost is around October 9. That gives Custer an average growing season of about 151 days.
Last spring frost
| Early (10% chance after) | March 26 |
|---|---|
| Average (50%) | May 11 |
| Late (90%) | May 16 |
First fall frost
| Early (10%) | October 5 |
|---|---|
| Average (50%) | October 9 |
| Late (90% chance before) | October 19 |