Is a body temperature of 37.3°C normal for elderly individuals?

For relatively healthy older adults, the standard for normal body temperature follows general guidelines—namely, oral, axillary (underarm), and rectal temperatures.

Is a temperature of 37.3°C normal in older adults?

If measured rectally, a temperature of 37.3°C is considered within the normal range for older adults and does not indicate fever. The normal rectal temperature range for older adults is 36.5–37.7°C; fever is generally defined as a rectal temperature exceeding 37.7°C.

However, if measured orally or axillary, a temperature of 37.3°C may already represent low-grade fever. In such cases, active investigation into the underlying cause—and appropriate treatment—is essential for optimal outcomes. Persistent low-grade fever should not be treated with antipyretics alone; instead, diagnostic efforts to identify the root cause should take priority. Indiscriminate use of antipyretics may impair immune function and hinder recovery.

Common causes of low-grade fever include infectious conditions—often detectable via routine blood tests—as well as malignancies or rheumatic and autoimmune disorders.

Knowledge Extension: What to do when an older adult has elevated body temperature

Management of fever in older adults should be tailored according to temperature severity. If body temperature remains below 38°C, encourage increased intake of warm water and apply physical cooling measures—such as wiping the forehead, axillae, anterior chest, and back with a damp towel—while simultaneously initiating targeted pharmacologic therapy based on the underlying cause. If temperature exceeds 38.5°C, administer oral antipyretics promptly in addition to addressing the primary cause, to prevent excessive physiological stress and support timely recovery.

The above outlines whether a temperature of 37.3°C is considered normal in older adults. We hope this information is helpful to you.