Frost dates in Wallingford, IA
The average last spring frost in Wallingford is around April 30 and the first fall frost is around October 3. That gives Wallingford an average growing season of about 156 days.
Last spring frost
| Early (10% chance after) | April 18 |
|---|---|
| Average (50%) | April 30 |
| Late (90%) | May 16 |
First fall frost
| Early (10%) | September 19 |
|---|---|
| Average (50%) | October 3 |
| Late (90% chance before) | October 15 |