For a healthy nine-month-old, a normal body temperature typically ranges from 97.9?F to 100.4?F (36.6?C to 38?C) when measured rectally, which is the most accurate method. If measured under the armpit, it may read slightly lower, usually between 97.5?F and 99.3?F (36.4?C to 37.4?C). Please remember that minor fluctuations are completely normal. As long as she is active, feeding well, and smiling, she is likely doing great. If her temperature goes above 100.4?F (38?C) or if you feel uneasy, please reach out to her pediatrician.
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What is the normal body temperature range for a nine-month-old infant?