Frostline.info

Frost line depth in Tennessee

Estimated frost depth in typical soil runs from 13″ to 24″ across Tennessee's 95 counties. Pick your county or enter a ZIP code for a local estimate.

Deepest frost

  1. Robertson County 24″
  2. Stewart County 23″
  3. Cumberland County 23″
  4. Claiborne County 23″
  5. Johnson County 23″

Mildest

  1. Hamilton County 13″
  2. Shelby County 13″
  3. Bradley County 13″
  4. Wayne County 14″
  5. Hardin County 14″

Frost depth by county

CountyEst. frost (typical soil)Typical code range
Anderson County16″12–24″
Bedford County16″12–24″
Benton County22″18–30″
Bledsoe County20″18–24″
Blount County16″12–24″
Bradley County13″12–18″
Campbell County21″18–30″
Cannon County17″18–24″
Carroll County21″18–30″
Carter County21″18–30″
Cheatham County21″18–30″
Chester County17″18–24″
Claiborne County23″18–30″
Clay County22″18–30″
Cocke County18″18–24″
Coffee County16″12–24″
Crockett County18″18–24″
Cumberland County23″18–30″
Davidson County19″18–24″
Decatur County17″18–24″
DeKalb County18″18–24″
Dickson County19″18–24″
Dyer County20″18–24″
Fayette County16″12–24″
Fentress County21″18–30″
Franklin County17″12–24″
Gibson County21″18–30″
Giles County16″12–24″
Grainger County19″18–24″
Greene County19″18–24″
Grundy County17″18–24″
Hamblen County18″18–24″
Hamilton County13″12–18″
Hancock County20″18–24″
Hardeman County16″12–24″
Hardin County14″12–18″
Hawkins County18″18–24″
Haywood County17″18–24″
Henderson County17″18–24″
Henry County22″18–30″
Hickman County18″18–24″
Houston County23″18–30″
Humphreys County21″18–30″
Jackson County22″18–30″
Jefferson County17″18–24″
Johnson County23″18–30″
Knox County15″12–18″
Lake County21″18–30″
Lauderdale County18″18–24″
Lawrence County15″12–18″
Lewis County18″18–24″
Lincoln County16″12–24″
Loudon County18″18–24″
Macon County22″18–30″
Madison County18″18–24″
Marion County16″12–24″
Marshall County18″18–24″
Maury County17″18–24″
McMinn County16″12–24″
McNairy County14″12–18″
Meigs County19″18–24″
Monroe County17″18–24″
Montgomery County22″18–30″
Moore County15″12–18″
Morgan County20″18–24″
Obion County22″18–30″
Overton County22″18–30″
Perry County16″12–24″
Pickett County22″18–30″
Polk County15″12–18″
Putnam County22″18–30″
Rhea County19″18–24″
Roane County18″18–24″
Robertson County24″24–30″
Rutherford County18″18–24″
Scott County21″18–30″
Sequatchie County16″12–24″
Sevier County17″18–24″
Shelby County13″12–18″
Smith County20″18–24″
Stewart County23″18–30″
Sullivan County18″18–24″
Sumner County22″18–30″
Tipton County19″18–24″
Trousdale County20″18–24″
Unicoi County19″18–24″
Union County19″18–24″
Van Buren County19″18–24″
Warren County16″12–24″
Washington County19″18–24″
Wayne County14″12–18″
Weakley County22″18–30″
White County19″18–24″
Williamson County17″18–24″
Wilson County19″18–24″

Common questions

What is the frost line depth in Tennessee?

It ranges from about 13 inches in the mildest county to 24 inches in the coldest, in typical soil.

Which Tennessee county has the deepest frost?

Robertson County, at about 24 inches in typical soil.