Frost dates in Allen, OK
The average last spring frost in Allen is around March 31 and the first fall frost is around November 4. That gives Allen an average growing season of about 218 days.
Last spring frost
| Early (10% chance after) | March 17 |
|---|---|
| Average (50%) | March 31 |
| Late (90%) | April 15 |
First fall frost
| Early (10%) | October 19 |
|---|---|
| Average (50%) | November 4 |
| Late (90% chance before) | November 19 |