Frost dates in Cottonwood, ID
The average last spring frost in Cottonwood is around May 10 and the first fall frost is around October 9. That gives Cottonwood an average growing season of about 152 days.
Last spring frost
| Early (10% chance after) | April 22 |
|---|---|
| Average (50%) | May 10 |
| Late (90%) | May 30 |
First fall frost
| Early (10%) | September 24 |
|---|---|
| Average (50%) | October 9 |
| Late (90% chance before) | October 26 |