Frost line depth in Maine
Estimated frost depth in typical soil runs from 35″ to 49″ across Maine's 16 counties. Pick your county or enter a ZIP code for a local estimate.
Deepest frost
- Aroostook County 49″
- Franklin County 45″
- Piscataquis County 45″
- Oxford County 44″
- Penobscot County 44″
Mildest
- Hancock County 35″
- York County 36″
- Knox County 37″
- Waldo County 37″
- Cumberland County 38″
Frost depth by county
| County | Est. frost (typical soil) | Typical code range |
|---|---|---|
| Androscoggin County | 38″ | 30–48″ |
| Aroostook County | 49″ | 42–60″ |
| Cumberland County | 38″ | 30–48″ |
| Franklin County | 45″ | 36–60″ |
| Hancock County | 35″ | 30–42″ |
| Kennebec County | 39″ | 36–48″ |
| Knox County | 37″ | 30–48″ |
| Lincoln County | 39″ | 30–48″ |
| Oxford County | 44″ | 36–54″ |
| Penobscot County | 44″ | 36–54″ |
| Piscataquis County | 45″ | 36–54″ |
| Sagadahoc County | 38″ | 30–48″ |
| Somerset County | 43″ | 36–54″ |
| Waldo County | 37″ | 30–48″ |
| Washington County | 38″ | 30–48″ |
| York County | 36″ | 30–48″ |
Common questions
What is the frost line depth in Maine?
It ranges from about 35 inches in the mildest county to 49 inches in the coldest, in typical soil.
Which Maine county has the deepest frost?
Aroostook County, at about 49 inches in typical soil.