Frost dates in Duncan, AZ
The average last spring frost in Duncan is around April 29 and the first fall frost is around October 23. That gives Duncan an average growing season of about 177 days.
Last spring frost
| Early (10% chance after) | April 8 |
|---|---|
| Average (50%) | April 29 |
| Late (90%) | May 16 |
First fall frost
| Early (10%) | October 9 |
|---|---|
| Average (50%) | October 23 |
| Late (90% chance before) | November 5 |