Frost dates in Clinton, IA
The average last spring frost in Clinton is around April 25 and the first fall frost is around October 11. That gives Clinton an average growing season of about 169 days.
Last spring frost
| Early (10% chance after) | April 10 |
|---|---|
| Average (50%) | April 25 |
| Late (90%) | May 10 |
First fall frost
| Early (10%) | September 25 |
|---|---|
| Average (50%) | October 11 |
| Late (90% chance before) | October 25 |