Frost dates in Brookings, SD
The average last spring frost in Brookings is around May 14 and the first fall frost is around September 23. That gives Brookings an average growing season of about 132 days.
Last spring frost
| Early (10% chance after) | April 27 |
|---|---|
| Average (50%) | May 14 |
| Late (90%) | May 29 |
First fall frost
| Early (10%) | September 11 |
|---|---|
| Average (50%) | September 23 |
| Late (90% chance before) | October 9 |