Frost dates in Idaho Springs, CO
The average last spring frost in Idaho Springs is around June 17 and the first fall frost is around September 9. That gives Idaho Springs an average growing season of about 84 days.
Last spring frost
| Early (10% chance after) | June 2 |
|---|---|
| Average (50%) | June 17 |
| Late (90%) | July 1 |
First fall frost
| Early (10%) | August 12 |
|---|---|
| Average (50%) | September 9 |
| Late (90% chance before) | September 19 |