Frost dates in Woonsocket, SD
The average last spring frost in Woonsocket is around May 12 and the first fall frost is around September 24. That gives Woonsocket an average growing season of about 135 days.
Last spring frost
| Early (10% chance after) | April 26 |
|---|---|
| Average (50%) | May 12 |
| Late (90%) | May 27 |
First fall frost
| Early (10%) | September 13 |
|---|---|
| Average (50%) | September 24 |
| Late (90% chance before) | October 10 |