Frost dates in Rifle, CO
The average last spring frost in Rifle is around May 25 and the first fall frost is around September 28. That gives Rifle an average growing season of about 126 days.
Last spring frost
| Early (10% chance after) | May 4 |
|---|---|
| Average (50%) | May 25 |
| Late (90%) | June 2 |
First fall frost
| Early (10%) | September 11 |
|---|---|
| Average (50%) | September 28 |
| Late (90% chance before) | October 13 |