Frost dates in Kennebec, SD
The average last spring frost in Kennebec is around May 14 and the first fall frost is around September 25. That gives Kennebec an average growing season of about 134 days.
Last spring frost
| Early (10% chance after) | April 28 |
|---|---|
| Average (50%) | May 14 |
| Late (90%) | May 29 |
First fall frost
| Early (10%) | September 12 |
|---|---|
| Average (50%) | September 25 |
| Late (90% chance before) | October 9 |