Frost dates in Florence, SD
The average last spring frost in Florence is around May 14 and the first fall frost is around September 29. That gives Florence an average growing season of about 138 days.
Last spring frost
| Early (10% chance after) | April 29 |
|---|---|
| Average (50%) | May 14 |
| Late (90%) | May 17 |
First fall frost
| Early (10%) | September 15 |
|---|---|
| Average (50%) | September 29 |
| Late (90% chance before) | October 9 |