| | Cancer | Mouth Cancer What is the temperature of a mouth? Normal oral temperature (sublingual), measured with an oral thermometer, ranges from 35.4–37.4 °C (95.9–99.4 °F). Mouth Cancer - Related Articles About Biodegradable Products Exercises for Heel Pain Beginning Symptoms of MS Teenagers' Sleeping Habits Seizure Treatment What Are the Dangers of Addiction to Pain Killers? How to Teach Natural Family Planning