Frostline.info

Frost line depth in North Carolina

Estimated frost depth in typical soil runs from 7″ to 25″ across North Carolina's 100 counties. Pick your county or enter a ZIP code for a local estimate.

Deepest frost

  1. Avery County 25″
  2. Watauga County 24″
  3. Ashe County 23″
  4. Alleghany County 22″
  5. Mitchell County 21″

Mildest

  1. Carteret County 7″
  2. Brunswick County 7″
  3. Pamlico County 7″
  4. Chowan County 7″
  5. Pender County 7″

Frost depth by county

CountyEst. frost (typical soil)Typical code range
Alamance County11″12–18″
Alexander County13″12–18″
Alleghany County22″18–30″
Anson County9″12–18″
Ashe County23″18–30″
Avery County25″24–30″
Beaufort County8″12–18″
Bertie County9″12–18″
Bladen County8″12–18″
Brunswick County7″12–18″
Buncombe County16″12–24″
Burke County11″12–18″
Cabarrus County10″12–18″
Caldwell County13″12–18″
Camden County8″12–18″
Carteret County7″12–18″
Caswell County13″12–18″
Catawba County12″12–18″
Chatham County13″12–18″
Cherokee County16″12–24″
Chowan County7″12–18″
Clay County17″18–24″
Cleveland County10″12–18″
Columbus County7″12–18″
Craven County7″12–18″
Cumberland County8″12–18″
Currituck County8″12–18″
Dare County8″12–18″
Davidson County10″12–18″
Davie County10″12–18″
Duplin County8″12–18″
Durham County11″12–18″
Edgecombe County9″12–18″
Forsyth County11″12–18″
Franklin County14″12–18″
Gaston County8″12–18″
Gates County10″12–18″
Graham County16″12–24″
Granville County11″12–18″
Greene County9″12–18″
Guilford County12″12–18″
Halifax County11″12–18″
Harnett County10″12–18″
Haywood County17″18–24″
Henderson County16″12–24″
Hertford County10″12–18″
Hoke County8″12–18″
Hyde County7″12–18″
Iredell County13″12–18″
Jackson County15″12–18″
Johnston County9″12–18″
Jones County8″12–18″
Lee County12″12–18″
Lenoir County9″12–18″
Lincoln County10″12–18″
Macon County15″12–18″
Madison County17″12–24″
Martin County8″12–18″
McDowell County12″12–18″
Mecklenburg County9″12–18″
Mitchell County21″18–30″
Montgomery County10″12–18″
Moore County10″12–18″
Nash County10″12–18″
New Hanover County7″12–18″
Northampton County11″12–18″
Onslow County8″12–18″
Orange County12″12–18″
Pamlico County7″12–18″
Pasquotank County8″12–18″
Pender County7″12–18″
Perquimans County8″12–18″
Person County11″12–18″
Pitt County8″12–18″
Polk County11″12–18″
Randolph County11″12–18″
Richmond County9″12–18″
Robeson County9″12–18″
Rockingham County14″12–18″
Rowan County10″12–18″
Rutherford County11″12–18″
Sampson County8″12–18″
Scotland County8″12–18″
Stanly County9″12–18″
Stokes County14″12–18″
Surry County16″12–24″
Swain County16″12–24″
Transylvania County15″12–18″
Tyrrell County8″12–18″
Union County9″12–18″
Vance County13″12–18″
Wake County11″12–18″
Warren County13″12–18″
Washington County8″12–18″
Watauga County24″18–30″
Wayne County9″12–18″
Wilkes County19″18–24″
Wilson County9″12–18″
Yadkin County14″12–18″
Yancey County21″18–30″

Common questions

What is the frost line depth in North Carolina?

It ranges from about 7 inches in the mildest county to 25 inches in the coldest, in typical soil.

Which North Carolina county has the deepest frost?

Avery County, at about 25 inches in typical soil.