Frost dates in Pierce, CO
The average last spring frost in Pierce is around May 13 and the first fall frost is around October 2. That gives Pierce an average growing season of about 142 days.
Last spring frost
| Early (10% chance after) | April 27 |
|---|---|
| Average (50%) | May 13 |
| Late (90%) | May 22 |
First fall frost
| Early (10%) | September 11 |
|---|---|
| Average (50%) | October 2 |
| Late (90% chance before) | October 10 |