Frost dates in Mount Vernon, OH
The average last spring frost in Mount Vernon is around May 4 and the first fall frost is around October 2. That gives Mount Vernon an average growing season of about 151 days.
Last spring frost
| Early (10% chance after) | April 16 |
|---|---|
| Average (50%) | May 4 |
| Late (90%) | May 18 |
First fall frost
| Early (10%) | September 18 |
|---|---|
| Average (50%) | October 2 |
| Late (90% chance before) | October 21 |