Frost dates in Owasso, OK
The average last spring frost in Owasso is around March 30 and the first fall frost is around November 5. That gives Owasso an average growing season of about 220 days.
Last spring frost
| Early (10% chance after) | March 17 |
|---|---|
| Average (50%) | March 30 |
| Late (90%) | April 14 |
First fall frost
| Early (10%) | October 21 |
|---|---|
| Average (50%) | November 5 |
| Late (90% chance before) | November 21 |