Frost dates in Hill City, SD
The average last spring frost in Hill City is around June 5 and the first fall frost is around September 9. That gives Hill City an average growing season of about 96 days.
Last spring frost
| Early (10% chance after) | April 28 |
|---|---|
| Average (50%) | June 5 |
| Late (90%) | June 28 |
First fall frost
| Early (10%) | August 25 |
|---|---|
| Average (50%) | September 9 |
| Late (90% chance before) | September 26 |