Frost dates in McIntosh, SD
The average last spring frost in McIntosh is around May 12 and the first fall frost is around September 25. That gives McIntosh an average growing season of about 136 days.
Last spring frost
| Early (10% chance after) | April 25 |
|---|---|
| Average (50%) | May 12 |
| Late (90%) | May 29 |
First fall frost
| Early (10%) | September 12 |
|---|---|
| Average (50%) | September 25 |
| Late (90% chance before) | October 17 |