Frost dates in Egan, SD
The average last spring frost in Egan is around May 11 and the first fall frost is around September 25. That gives Egan an average growing season of about 137 days.
Last spring frost
| Early (10% chance after) | April 25 |
|---|---|
| Average (50%) | May 11 |
| Late (90%) | May 25 |
First fall frost
| Early (10%) | September 13 |
|---|---|
| Average (50%) | September 25 |
| Late (90% chance before) | October 10 |