Frost dates in Gregory, SD
The average last spring frost in Gregory is around May 11 and the first fall frost is around October 4. That gives Gregory an average growing season of about 146 days.
Last spring frost
| Early (10% chance after) | April 22 |
|---|---|
| Average (50%) | May 11 |
| Late (90%) | May 22 |
First fall frost
| Early (10%) | September 19 |
|---|---|
| Average (50%) | October 4 |
| Late (90% chance before) | October 17 |