Frost dates in Greenfield, OK
The average last spring frost in Greenfield is around April 5 and the first fall frost is around November 3. That gives Greenfield an average growing season of about 212 days.
Last spring frost
| Early (10% chance after) | March 18 |
|---|---|
| Average (50%) | April 5 |
| Late (90%) | April 17 |
First fall frost
| Early (10%) | October 19 |
|---|---|
| Average (50%) | November 3 |
| Late (90% chance before) | November 19 |