Frost dates in Boonsboro, MD
The average last spring frost in Boonsboro is around April 26 and the first fall frost is around October 19. That gives Boonsboro an average growing season of about 176 days.
Last spring frost
| Early (10% chance after) | April 15 |
|---|---|
| Average (50%) | April 26 |
| Late (90%) | May 13 |
First fall frost
| Early (10%) | October 10 |
|---|---|
| Average (50%) | October 19 |
| Late (90% chance before) | November 1 |