Frost dates in Ironton, MO
The average last spring frost in Ironton is around April 24 and the first fall frost is around October 10. That gives Ironton an average growing season of about 169 days.
Last spring frost
| Early (10% chance after) | April 6 |
|---|---|
| Average (50%) | April 24 |
| Late (90%) | May 11 |
First fall frost
| Early (10%) | September 30 |
|---|---|
| Average (50%) | October 10 |
| Late (90% chance before) | October 25 |