Frost dates in Pierpont, SD
The average last spring frost in Pierpont is around May 10 and the first fall frost is around October 10. That gives Pierpont an average growing season of about 153 days.
Last spring frost
| Early (10% chance after) | April 22 |
|---|---|
| Average (50%) | May 10 |
| Late (90%) | May 16 |
First fall frost
| Early (10%) | September 28 |
|---|---|
| Average (50%) | October 10 |
| Late (90% chance before) | October 16 |