Your “normal” body temperature changes throughout your life. It often rises from childhood into adulthood before dipping during the later years of life.
Cleveland Clinic (February 21, 2023) – But newer studies suggest the average person today actually runs a little cooler than that — somewhere between 97.5 F (36.4 C) and 97.9 F (36.6 C).
For younger children
The typical body temperature range for children between birth and 10 years old goes from 95.9 F (35.5 C) to 99.5 F (37.5 C). This would be a temperature measured through an oral reading.
For adults and older children
The typical body temperature range for people ages 11 to 65 is 97.6 F (36.4 C) to 99.6 F (37.6 C).
For older adults
The typical body temperature range for people older than 65 is 96.4 F (35.8 C) to 98.5 F (36.9 C).
A temperature that’s higher than 100.4 F (or 38 C) is considered a fever, and it’s usually something you should bring to your doctor’s attention — especially if it lingers for more than two days, Dr. Ford says.
Oftentimes, a fever is your body’s reaction to an infection or virus (like influenza). A fever itself doesn’t require any specific treatment, other than trying to bring the temperature down for your comfort.
Persistent low-grade or high-grade fevers could signal that something else is going on in your body. A number of medical conditions, including hyperthyroidism and other endocrine disorders, can raise your body’s core temperature.