A person's presence in a cold atmosphere is a possible cause of chills without fever, according to MedicineNet. A person with chills feels cold and shivers. Someone who remains in cold conditions for an extended time may experience a drop in core body temperature known as hypothermia.
When a person feels cold, the body's muscles attempt to create heat by contracting and expanding repeatedly, producing chills, explains Healthline. An individual can experience chills in periodic episodes of a few minutes each or continuously for up to an hour. A person experiencing chills without fever or other symptoms does not need medical attention; drinking liquids and resting is sufficient.