Frost dates in Union, SC
The average last spring frost in Union is around April 12 and the first fall frost is around October 28. That gives Union an average growing season of about 199 days.
Last spring frost
| Early (10% chance after) | April 2 |
|---|---|
| Average (50%) | April 12 |
| Late (90%) | April 24 |
First fall frost
| Early (10%) | October 15 |
|---|---|
| Average (50%) | October 28 |
| Late (90% chance before) | November 8 |