What is the normal temperature range for the rectal method of measurement?

The normal temperature range for the rectal method of measurement is considered to be between 98.6°F to 100.6°F. This range is higher than oral measurements due to the rectum being a core body temperature site. Rectal temperatures are typically about 0.5°F to 1°F higher than oral temperatures, providing a more accurate reflection of the body's internal temperature. This makes rectal temperature measurement particularly useful in clinical settings for checking for fever or monitoring body temperature in patients who may be less responsive or unable to have their temperature taken orally. Each of the other ranges presented fails to encompass the typical normal rectal temperature values accurately, being either too low or too broad for what is considered physiological normality.