Frost dates in Castle, OK
The average last spring frost in Castle is around March 29 and the first fall frost is around November 8. That gives Castle an average growing season of about 224 days.
Last spring frost
| Early (10% chance after) | March 14 |
|---|---|
| Average (50%) | March 29 |
| Late (90%) | April 13 |
First fall frost
| Early (10%) | October 23 |
|---|---|
| Average (50%) | November 8 |
| Late (90% chance before) | November 25 |