Frost dates in Andover, IA
The average last spring frost in Andover is around April 15 and the first fall frost is around October 22. That gives Andover an average growing season of about 190 days.
Last spring frost
| Early (10% chance after) | April 4 |
|---|---|
| Average (50%) | April 15 |
| Late (90%) | April 29 |
First fall frost
| Early (10%) | October 6 |
|---|---|
| Average (50%) | October 22 |
| Late (90% chance before) | November 5 |