Frost dates in Pierce, ID
The average last spring frost in Pierce is around June 15 and the first fall frost is around September 2. That gives Pierce an average growing season of about 79 days.
Last spring frost
| Early (10% chance after) | May 21 |
|---|---|
| Average (50%) | June 15 |
| Late (90%) | July 11 |
First fall frost
| Early (10%) | August 18 |
|---|---|
| Average (50%) | September 2 |
| Late (90% chance before) | September 18 |