Different sources have different cut-offs for fever, hyperthermia and hyperpyrexia. Normal human body temperature, also known as normothermia or euthermia, is the typical temperature range found in humans. The normal human body temperature range is typically stated as – °C (– °F).Variations · Concepts · Basal body temperature · Core temperature. Jan 26, - The average normal body temperature is generally accepted as °F (37°C). Some studies have shown that the "normal" body temperature can have a wide range, from 97°F (°C) to 99°F (°C). A temperature over °F (38°C) most often means you have a fever caused by an infection or illness.