The normal ear temperature for adults is 99.5° F (37.5° C).Click to see full answer. Just so, what is considered a fever with ear thermometer?Your child has a fever if he or she: Has a rectal, ear or temporal artery temperature of 100.4 F (38 C) or higher. Has an oral temperature of 100 F (37.8 C) or higher. Has an armpit temperature of 99 F (37.2 C) or higher.Beside above, do I need to add a degree when taking temperature in the ear? No, you do not have to add a degree to the ear thermometer. The doctors have a chart like the one above to determine whether the temperature is high for the type of thermometer used. Thereof, how accurate is the ear thermometer? Researchers found temperature discrepancies of as much as 1 degree in either direction when ear thermometer readings were compared with rectal thermometer readings, the most accurate form of measurement.What should your temperature be in your ear?The average normal oral temperature is 37°C (98.6°F). A rectal temperature is 0.3°C (0.5°F) to 0.6°C (1°F) higher than an oral temperature. An ear (tympanic) temperature is 0.3°C (0.5°F) to 0.6°C (1°F) higher than an oral temperature.