Frost dates in Birmingham, MI
The average last spring frost in Birmingham is around May 4 and the first fall frost is around October 14. That gives Birmingham an average growing season of about 163 days.
Last spring frost
| Early (10% chance after) | April 17 |
|---|---|
| Average (50%) | May 4 |
| Late (90%) | May 20 |
First fall frost
| Early (10%) | September 30 |
|---|---|
| Average (50%) | October 14 |
| Late (90% chance before) | October 30 |