Frost dates in Humeston, IA
The average last spring frost in Humeston is around April 28 and the first fall frost is around October 4. That gives Humeston an average growing season of about 159 days.
Last spring frost
| Early (10% chance after) | April 15 |
|---|---|
| Average (50%) | April 28 |
| Late (90%) | May 12 |
First fall frost
| Early (10%) | September 21 |
|---|---|
| Average (50%) | October 4 |
| Late (90% chance before) | October 23 |