Frost dates in Mount Ayr, IN
The average last spring frost in Mount Ayr is around April 22 and the first fall frost is around October 15. That gives Mount Ayr an average growing season of about 176 days.
Last spring frost
| Early (10% chance after) | April 8 |
|---|---|
| Average (50%) | April 22 |
| Late (90%) | May 8 |
First fall frost
| Early (10%) | October 2 |
|---|---|
| Average (50%) | October 15 |
| Late (90% chance before) | November 1 |