Frost dates in Putnam, OK
The average last spring frost in Putnam is around April 10 and the first fall frost is around October 27. That gives Putnam an average growing season of about 200 days.
Last spring frost
| Early (10% chance after) | March 13 |
|---|---|
| Average (50%) | April 10 |
| Late (90%) | April 22 |
First fall frost
| Early (10%) | October 11 |
|---|---|
| Average (50%) | October 27 |
| Late (90% chance before) | November 12 |