Frost dates in South Lyon, MI
The average last spring frost in South Lyon is around April 30 and the first fall frost is around October 18. That gives South Lyon an average growing season of about 171 days.
Last spring frost
| Early (10% chance after) | April 23 |
|---|---|
| Average (50%) | April 30 |
| Late (90%) | May 14 |
First fall frost
| Early (10%) | October 7 |
|---|---|
| Average (50%) | October 18 |
| Late (90% chance before) | October 26 |