Frost dates in Grayling, MI
The average last spring frost in Grayling is around May 29 and the first fall frost is around September 17. That gives Grayling an average growing season of about 111 days.
Last spring frost
| Early (10% chance after) | May 14 |
|---|---|
| Average (50%) | May 29 |
| Late (90%) | June 21 |
First fall frost
| Early (10%) | August 27 |
|---|---|
| Average (50%) | September 17 |
| Late (90% chance before) | October 4 |