Frost dates in Herrick, SD
The average last spring frost in Herrick is around May 7 and the first fall frost is around October 1. That gives Herrick an average growing season of about 147 days.
Last spring frost
| Early (10% chance after) | April 19 |
|---|---|
| Average (50%) | May 7 |
| Late (90%) | May 22 |
First fall frost
| Early (10%) | September 18 |
|---|---|
| Average (50%) | October 1 |
| Late (90% chance before) | October 21 |