What is the normal temperature of a 3 month old baby?

The normal body temperature for a 3-month-old baby typically ranges from 97°F (36.1°C) to 100.4°F (38°C) when measured rectally. It's important to note that temperatures can vary slightly depending on the method of measurement (oral, axillary, or rectal). If a baby has a fever, defined as a rectal temperature of 100.4°F (38°C) or higher, it's advisable to consult a pediatrician. Always monitor for other signs of illness in conjunction with temperature readings.