Frost dates in Union, OH
The average last spring frost in Union is around April 20 and the first fall frost is around October 23. That gives Union an average growing season of about 186 days.
Last spring frost
| Early (10% chance after) | April 8 |
|---|---|
| Average (50%) | April 20 |
| Late (90%) | May 5 |
First fall frost
| Early (10%) | October 7 |
|---|---|
| Average (50%) | October 23 |
| Late (90% chance before) | November 4 |