Frost dates in Troy, ID
The average last spring frost in Troy is around May 10 and the first fall frost is around October 23. That gives Troy an average growing season of about 166 days.
Last spring frost
| Early (10% chance after) | April 20 |
|---|---|
| Average (50%) | May 10 |
| Late (90%) | May 28 |
First fall frost
| Early (10%) | September 29 |
|---|---|
| Average (50%) | October 23 |
| Late (90% chance before) | October 29 |