Frost dates in White Rock, SD
The average last spring frost in White Rock is around May 2 and the first fall frost is around October 5. That gives White Rock an average growing season of about 156 days.
Last spring frost
| Early (10% chance after) | April 10 |
|---|---|
| Average (50%) | May 2 |
| Late (90%) | May 16 |
First fall frost
| Early (10%) | September 24 |
|---|---|
| Average (50%) | October 5 |
| Late (90% chance before) | October 16 |