normal oral temperature
According to the American Academy of Family Physicians, a fever is indicated when body temperature rises about one degree or more over the normal temperature of 37.0 degrees Celsius (98.6 degrees Fahrenheit). About This Image: Body temperature thermometer Adults: A fever is generally agreed to be present if: Temperature in the mouth (oral) is at or over 37.7Â°C (99.9Â°F) Temperature in the anus (rectum/rectal) is at or over 37.5 - 38.3Â°C (99.5 - 100.9Â°F)