Frost dates in Highmore, SD
The average last spring frost in Highmore is around May 15 and the first fall frost is around September 25. That gives Highmore an average growing season of about 133 days.
Last spring frost
| Early (10% chance after) | April 29 |
|---|---|
| Average (50%) | May 15 |
| Late (90%) | June 2 |
First fall frost
| Early (10%) | September 11 |
|---|---|
| Average (50%) | September 25 |
| Late (90% chance before) | October 12 |