Frost dates in Ririe, ID
The average last spring frost in Ririe is around May 13 and the first fall frost is around October 5. That gives Ririe an average growing season of about 145 days.
Last spring frost
| Early (10% chance after) | April 26 |
|---|---|
| Average (50%) | May 13 |
| Late (90%) | May 24 |
First fall frost
| Early (10%) | September 20 |
|---|---|
| Average (50%) | October 5 |
| Late (90% chance before) | October 24 |