Frost dates in Munising, MI
The average last spring frost in Munising is around May 22 and the first fall frost is around October 16. That gives Munising an average growing season of about 147 days.
Last spring frost
| Early (10% chance after) | May 13 |
|---|---|
| Average (50%) | May 22 |
| Late (90%) | June 2 |
First fall frost
| Early (10%) | October 1 |
|---|---|
| Average (50%) | October 16 |
| Late (90% chance before) | October 31 |