Frost dates in Ravinia, SD
The average last spring frost in Ravinia is around May 2 and the first fall frost is around October 7. That gives Ravinia an average growing season of about 158 days.
Last spring frost
| Early (10% chance after) | April 14 |
|---|---|
| Average (50%) | May 2 |
| Late (90%) | May 16 |
First fall frost
| Early (10%) | September 24 |
|---|---|
| Average (50%) | October 7 |
| Late (90% chance before) | October 26 |