Frost dates in Jerome, ID
The average last spring frost in Jerome is around May 11 and the first fall frost is around October 4. That gives Jerome an average growing season of about 146 days.
Last spring frost
| Early (10% chance after) | April 20 |
|---|---|
| Average (50%) | May 11 |
| Late (90%) | June 2 |
First fall frost
| Early (10%) | September 18 |
|---|---|
| Average (50%) | October 4 |
| Late (90% chance before) | October 24 |