Frost dates in Mertzon, TX
The average last spring frost in Mertzon is around April 4 and the first fall frost is around October 31. That gives Mertzon an average growing season of about 210 days.
Last spring frost
| Early (10% chance after) | February 23 |
|---|---|
| Average (50%) | April 4 |
| Late (90%) | April 16 |
First fall frost
| Early (10%) | October 14 |
|---|---|
| Average (50%) | October 31 |
| Late (90% chance before) | November 12 |