Normal adult oral temperature range is approximately:

Explanation

Normal oral temperature is approximately 97.0-99.0°F (36.1-37.2°C); axillary readings run about 1°F lower, while rectal readings run about 1°F higher. Fever per CDC and CMS guidance is a reading at or above 100.4°F (38.0°C), an important infection sign in elders, who may not show classic febrile presentations and may instead present with confusion or weakness. CNAs report any fever, hypothermia (below 95°F), and any acute temperature change immediately to the nurse for evaluation and possible workup.