Frost dates in Decatur, IN
The average last spring frost in Decatur is around April 27 and the first fall frost is around October 23. That gives Decatur an average growing season of about 179 days.
Last spring frost
| Early (10% chance after) | March 29 |
|---|---|
| Average (50%) | April 27 |
| Late (90%) | May 9 |
First fall frost
| Early (10%) | October 15 |
|---|---|
| Average (50%) | October 23 |
| Late (90% chance before) | November 9 |