Frost dates in Grantsville, MD
The average last spring frost in Grantsville is around May 16 and the first fall frost is around October 13. That gives Grantsville an average growing season of about 150 days.
Last spring frost
| Early (10% chance after) | May 1 |
|---|---|
| Average (50%) | May 16 |
| Late (90%) | May 26 |
First fall frost
| Early (10%) | October 1 |
|---|---|
| Average (50%) | October 13 |
| Late (90% chance before) | October 19 |