Frost dates in Killen, AL
The average last spring frost in Killen is around March 21 and the first fall frost is around November 1. That gives Killen an average growing season of about 225 days.
Last spring frost
| Early (10% chance after) | March 10 |
|---|---|
| Average (50%) | March 21 |
| Late (90%) | April 16 |
First fall frost
| Early (10%) | October 24 |
|---|---|
| Average (50%) | November 1 |
| Late (90% chance before) | November 22 |