Frost dates in Summerset, SD
The average last spring frost in Summerset is around May 7 and the first fall frost is around October 3. That gives Summerset an average growing season of about 149 days.
Last spring frost
| Early (10% chance after) | April 21 |
|---|---|
| Average (50%) | May 7 |
| Late (90%) | May 24 |
First fall frost
| Early (10%) | September 14 |
|---|---|
| Average (50%) | October 3 |
| Late (90% chance before) | October 25 |