Frost dates in Wilton, IA
The average last spring frost in Wilton is around April 19 and the first fall frost is around October 18. That gives Wilton an average growing season of about 182 days.
Last spring frost
| Early (10% chance after) | April 5 |
|---|---|
| Average (50%) | April 19 |
| Late (90%) | April 30 |
First fall frost
| Early (10%) | October 8 |
|---|---|
| Average (50%) | October 18 |
| Late (90% chance before) | November 6 |