Frost dates in Kootenai, ID
The average last spring frost in Kootenai is around May 17 and the first fall frost is around September 18. That gives Kootenai an average growing season of about 124 days.
Last spring frost
| Early (10% chance after) | April 30 |
|---|---|
| Average (50%) | May 17 |
| Late (90%) | June 6 |
First fall frost
| Early (10%) | September 1 |
|---|---|
| Average (50%) | September 18 |
| Late (90% chance before) | October 8 |