Frost dates in Carbon, IA
The average last spring frost in Carbon is around April 28 and the first fall frost is around October 8. That gives Carbon an average growing season of about 163 days.
Last spring frost
| Early (10% chance after) | April 14 |
|---|---|
| Average (50%) | April 28 |
| Late (90%) | May 13 |
First fall frost
| Early (10%) | September 24 |
|---|---|
| Average (50%) | October 8 |
| Late (90% chance before) | October 28 |