Frost dates in Frederick, MD
The average last spring frost in Frederick is around April 15 and the first fall frost is around October 21. That gives Frederick an average growing season of about 189 days.
Last spring frost
| Early (10% chance after) | April 1 |
|---|---|
| Average (50%) | April 15 |
| Late (90%) | April 29 |
First fall frost
| Early (10%) | October 6 |
|---|---|
| Average (50%) | October 21 |
| Late (90% chance before) | November 5 |