Frost dates in Mermentau, LA
The average last spring frost in Mermentau is around February 24 and the first fall frost is around November 29. That gives Mermentau an average growing season of about 279 days.
Last spring frost
| Early (10% chance after) | January 27 |
|---|---|
| Average (50%) | February 24 |
| Late (90%) | March 16 |
First fall frost
| Early (10%) | November 4 |
|---|---|
| Average (50%) | November 29 |
| Late (90% chance before) | December 16 |