A Frederick County man has died of hypothermia, Maryland officials reported Thursday, the first hypothermia death this winter.

In a statement from the state medical examiner’s office and the Department of Health and Mental Hygiene, officials said the death was confirmed between Dec. 18 and Dec. 24. The victim, who was found outside, was 65 or older. No other details were released to protect the privacy of the man’s family, officials said.

During the 2011-2012 winter, there were 15 hypothermia deaths in Maryland, and one death had been reported by this time in December 2011. Hypothermia occurs when the body temperature falls below 95 degrees F. Officials urged residents to keep their heads covered and wear several layers of lightweight, loose-fitting clothes to protect against the elements before heading outside.