Frost dates in St. Marks, FL
The average last spring frost in St. Marks is around March 14 and the first fall frost is around November 18. That gives St. Marks an average growing season of about 249 days.
Last spring frost
| Early (10% chance after) | February 19 |
|---|---|
| Average (50%) | March 14 |
| Late (90%) | April 3 |
First fall frost
| Early (10%) | October 30 |
|---|---|
| Average (50%) | November 18 |
| Late (90% chance before) | December 6 |