Frost dates in Merrill, MI
The average last spring frost in Merrill is around May 3 and the first fall frost is around October 13. That gives Merrill an average growing season of about 163 days.
Last spring frost
| Early (10% chance after) | April 18 |
|---|---|
| Average (50%) | May 3 |
| Late (90%) | May 14 |
First fall frost
| Early (10%) | September 27 |
|---|---|
| Average (50%) | October 13 |
| Late (90% chance before) | October 26 |