Frost dates in Holly, CO
The average last spring frost in Holly is around April 30 and the first fall frost is around October 8. That gives Holly an average growing season of about 161 days.
Last spring frost
| Early (10% chance after) | April 18 |
|---|---|
| Average (50%) | April 30 |
| Late (90%) | May 18 |
First fall frost
| Early (10%) | September 24 |
|---|---|
| Average (50%) | October 8 |
| Late (90% chance before) | October 19 |