Frost dates in Boyden, IA
The average last spring frost in Boyden is around May 7 and the first fall frost is around September 27. That gives Boyden an average growing season of about 143 days.
Last spring frost
| Early (10% chance after) | April 23 |
|---|---|
| Average (50%) | May 7 |
| Late (90%) | May 21 |
First fall frost
| Early (10%) | September 16 |
|---|---|
| Average (50%) | September 27 |
| Late (90% chance before) | October 10 |