Frost dates in Grottoes, VA
The average last spring frost in Grottoes is around April 22 and the first fall frost is around October 25. That gives Grottoes an average growing season of about 186 days.
Last spring frost
| Early (10% chance after) | April 6 |
|---|---|
| Average (50%) | April 22 |
| Late (90%) | May 11 |
First fall frost
| Early (10%) | October 9 |
|---|---|
| Average (50%) | October 25 |
| Late (90% chance before) | November 5 |