Frost dates in Portland, TX
The average last spring frost in Portland is around January 31 and the first fall frost is around December 19. That gives Portland an average growing season of about 323 days.
Last spring frost
| Early (10% chance after) | January 11 |
|---|---|
| Average (50%) | January 31 |
| Late (90%) | February 21 |
First fall frost
| Early (10%) | December 6 |
|---|---|
| Average (50%) | December 19 |
| Late (90% chance before) | December 26 |