Frost dates in Mount Vernon, NY
The average last spring frost in Mount Vernon is around April 4 and the first fall frost is around November 19. That gives Mount Vernon an average growing season of about 229 days.
Last spring frost
| Early (10% chance after) | March 11 |
|---|---|
| Average (50%) | April 4 |
| Late (90%) | April 11 |
First fall frost
| Early (10%) | November 10 |
|---|---|
| Average (50%) | November 19 |
| Late (90% chance before) | December 9 |