Frost dates in Dayton, OH
The average last spring frost in Dayton is around April 15 and the first fall frost is around October 27. That gives Dayton an average growing season of about 195 days.
Last spring frost
| Early (10% chance after) | April 2 |
|---|---|
| Average (50%) | April 15 |
| Late (90%) | May 4 |
First fall frost
| Early (10%) | October 6 |
|---|---|
| Average (50%) | October 27 |
| Late (90% chance before) | November 8 |