Is 98.7 fever for a 4 month old baby?

Normal temperature: Normal temperature is 98.6 and can fluctuate around this level. Fever is a significant elevation above that. Most physicians start using 100.3 or 100.5 as the temperature where a child begins to have a fever. Therefore 98.7 is a normal temperature for any child or adult.

100.4: A rectal temperature of 100.4 or higher is considered fever in an infant or child.

Part of body: The short answer is no. However, make sure you are taking it properly. The most reliable way to check it is rectaly