Frost dates in Red Oak, IA
The average last spring frost in Red Oak is around April 28 and the first fall frost is around October 7. That gives Red Oak an average growing season of about 162 days.
Last spring frost
| Early (10% chance after) | April 12 |
|---|---|
| Average (50%) | April 28 |
| Late (90%) | May 12 |
First fall frost
| Early (10%) | September 20 |
|---|---|
| Average (50%) | October 7 |
| Late (90% chance before) | October 23 |