Frost dates in Iliff, CO
The average last spring frost in Iliff is around May 8 and the first fall frost is around September 29. That gives Iliff an average growing season of about 144 days.
Last spring frost
| Early (10% chance after) | April 23 |
|---|---|
| Average (50%) | May 8 |
| Late (90%) | May 22 |
First fall frost
| Early (10%) | September 15 |
|---|---|
| Average (50%) | September 29 |
| Late (90% chance before) | October 16 |