Frost dates in Lamoni, IA
The average last spring frost in Lamoni is around April 22 and the first fall frost is around October 14. That gives Lamoni an average growing season of about 175 days.
Last spring frost
| Early (10% chance after) | April 6 |
|---|---|
| Average (50%) | April 22 |
| Late (90%) | May 4 |
First fall frost
| Early (10%) | September 28 |
|---|---|
| Average (50%) | October 14 |
| Late (90% chance before) | October 31 |