The body temperature will dictate the severity of the hypothermia.1
Mild Hypothermia
This is the least dangerous stage of hypothermia and is defined as a core body temperature below 95 degrees. It comes with shivering, trouble concentrating, fumbling fingers, and discomfort.
Moderate Hypothermia
This stage is not as well defined as mild hypothermia, but is usually diagnosed as a core body temperature below 90 degrees and includes dilated pupils, confusion, fatigue, and eventually a loss of consciousness.
Severe Hypothermia
This stage entails a core body temperature below 83 degrees and the patient is likely to be unconscious and completely unresponsive.