Frost dates in Royal Oak, MI
The average last spring frost in Royal Oak is around April 20 and the first fall frost is around October 29. That gives Royal Oak an average growing season of about 192 days.
Last spring frost
| Early (10% chance after) | April 10 |
|---|---|
| Average (50%) | April 20 |
| Late (90%) | May 1 |
First fall frost
| Early (10%) | October 15 |
|---|---|
| Average (50%) | October 29 |
| Late (90% chance before) | November 10 |