Frost dates in Cortez, CO
The average last spring frost in Cortez is around May 23 and the first fall frost is around October 1. That gives Cortez an average growing season of about 131 days.
Last spring frost
| Early (10% chance after) | May 4 |
|---|---|
| Average (50%) | May 23 |
| Late (90%) | June 10 |
First fall frost
| Early (10%) | September 16 |
|---|---|
| Average (50%) | October 1 |
| Late (90% chance before) | October 16 |