Frost dates in Mountain Home, ID
The average last spring frost in Mountain Home is around May 20 and the first fall frost is around September 21. That gives Mountain Home an average growing season of about 124 days.
Last spring frost
| Early (10% chance after) | April 26 |
|---|---|
| Average (50%) | May 20 |
| Late (90%) | June 18 |
First fall frost
| Early (10%) | August 31 |
|---|---|
| Average (50%) | September 21 |
| Late (90% chance before) | October 10 |