Frost dates in Basalt, CO
The average last spring frost in Basalt is around June 6 and the first fall frost is around September 21. That gives Basalt an average growing season of about 107 days.
Last spring frost
| Early (10% chance after) | May 14 |
|---|---|
| Average (50%) | June 6 |
| Late (90%) | June 16 |
First fall frost
| Early (10%) | September 8 |
|---|---|
| Average (50%) | September 21 |
| Late (90% chance before) | October 3 |