Frost dates in Ishpeming, MI
The average last spring frost in Ishpeming is around May 28 and the first fall frost is around October 1. That gives Ishpeming an average growing season of about 126 days.
Last spring frost
| Early (10% chance after) | May 11 |
|---|---|
| Average (50%) | May 28 |
| Late (90%) | June 3 |
First fall frost
| Early (10%) | September 12 |
|---|---|
| Average (50%) | October 1 |
| Late (90% chance before) | October 11 |