Frost dates in Glen St. Mary, FL
The average last spring frost in Glen St. Mary is around March 10 and the first fall frost is around November 22. That gives Glen St. Mary an average growing season of about 257 days.
Last spring frost
| Early (10% chance after) | February 14 |
|---|---|
| Average (50%) | March 10 |
| Late (90%) | April 6 |
First fall frost
| Early (10%) | November 4 |
|---|---|
| Average (50%) | November 22 |
| Late (90% chance before) | December 5 |