Frost dates in Seymour, IA
The average last spring frost in Seymour is around April 22 and the first fall frost is around October 13. That gives Seymour an average growing season of about 174 days.
Last spring frost
| Early (10% chance after) | April 6 |
|---|---|
| Average (50%) | April 22 |
| Late (90%) | May 8 |
First fall frost
| Early (10%) | September 27 |
|---|---|
| Average (50%) | October 13 |
| Late (90% chance before) | October 31 |