Frost dates in McLaughlin, SD
The average last spring frost in McLaughlin is around May 14 and the first fall frost is around September 23. That gives McLaughlin an average growing season of about 132 days.
Last spring frost
| Early (10% chance after) | April 27 |
|---|---|
| Average (50%) | May 14 |
| Late (90%) | May 30 |
First fall frost
| Early (10%) | September 12 |
|---|---|
| Average (50%) | September 23 |
| Late (90% chance before) | October 7 |