Frost dates in Post Falls, ID
The average last spring frost in Post Falls is around May 9 and the first fall frost is around October 4. That gives Post Falls an average growing season of about 148 days.
Last spring frost
| Early (10% chance after) | April 16 |
|---|---|
| Average (50%) | May 9 |
| Late (90%) | May 28 |
First fall frost
| Early (10%) | September 16 |
|---|---|
| Average (50%) | October 4 |
| Late (90% chance before) | October 26 |