Frost dates in Clark Fork, ID
The average last spring frost in Clark Fork is around June 8 and the first fall frost is around September 27. That gives Clark Fork an average growing season of about 111 days.
Last spring frost
| Early (10% chance after) | May 11 |
|---|---|
| Average (50%) | June 8 |
| Late (90%) | June 18 |
First fall frost
| Early (10%) | September 10 |
|---|---|
| Average (50%) | September 27 |
| Late (90% chance before) | October 11 |