The same office planned an autopsy Friday for a third county resident suspected of dying from the cold. Officials declined to release the person's identity or details of the death.
And in Philadelphia, authorities said hypothermia appeared to be the cause of death for a 30-year-old man found lying on the ground Thursday morning along Ridge Avenue just north of Chinatown.
Chris Jameson, 45, said he had moved into his father's house several months ago to serve as his caregiver.
He knew something was wrong when he woke before dawn Wednesday and realized his father wasn't in his bedroom.
Wearing only boxer shorts, socks, and a coat, the elder Jameson apparently took his walker and wandered into snow that was a foot deep.
"We still don't know the reason," Chris Jameson said.
The elder Jameson had diabetes and heart disease, which complicated the hypothermia, according to the medical examiner.
Jameson was a World War II veteran and grandfather who worked more than four decades at the Boeing Co.'s helicopter division in Ridley Township.
"He was a very great man, great father, great husband, great veteran. Just overall, he was a great man," said his son.
Besides his son, Jameson is survived by three other children and his wife, who resides in an elderly-care facility.
"It is tough. I cannot put it into words," Chris Jameson said of the loss. "It feels like something is missing in your heart."
Inquirer staff writer Robert Moran contributed to this article.