Frost dates in Fort Sumner, NM
The average last spring frost in Fort Sumner is around April 18 and the first fall frost is around October 23. That gives Fort Sumner an average growing season of about 188 days.
Last spring frost
| Early (10% chance after) | March 30 |
|---|---|
| Average (50%) | April 18 |
| Late (90%) | May 3 |
First fall frost
| Early (10%) | October 9 |
|---|---|
| Average (50%) | October 23 |
| Late (90% chance before) | November 5 |