Frost dates in Cincinnati, IA
The average last spring frost in Cincinnati is around April 22 and the first fall frost is around October 13. That gives Cincinnati 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 |