Frost dates in Pierson, MI
The average last spring frost in Pierson is around May 11 and the first fall frost is around October 2. That gives Pierson an average growing season of about 144 days.
Last spring frost
| Early (10% chance after) | April 25 |
|---|---|
| Average (50%) | May 11 |
| Late (90%) | May 27 |
First fall frost
| Early (10%) | September 21 |
|---|---|
| Average (50%) | October 2 |
| Late (90% chance before) | October 18 |