Frost dates in Tetonia, ID
The average last spring frost in Tetonia is around June 22 and the first fall frost is around September 4. That gives Tetonia an average growing season of about 74 days.
Last spring frost
| Early (10% chance after) | May 22 |
|---|---|
| Average (50%) | June 22 |
| Late (90%) | July 18 |
First fall frost
| Early (10%) | August 16 |
|---|---|
| Average (50%) | September 4 |
| Late (90% chance before) | September 21 |