Frost dates in Long Lake, SD
The average last spring frost in Long Lake is around May 8 and the first fall frost is around October 6. That gives Long Lake an average growing season of about 151 days.
Last spring frost
| Early (10% chance after) | April 23 |
|---|---|
| Average (50%) | May 8 |
| Late (90%) | May 16 |
First fall frost
| Early (10%) | September 20 |
|---|---|
| Average (50%) | October 6 |
| Late (90% chance before) | October 16 |