Can a babies temperature reach 102 while teething?

Teething: No. The current consensus is that teething does not cause significant fever. While it may cause irritability and sleep disturbance, fever >100.4 is most likely due to a coincident illness such a viral upper respiratory infection, otitis media, etc.

Not From Teeth: Teething does not actually cause a fever. Viral infections do most of that. Teething can cause stress to the body and in turn make the child more likely to get a viral infection and there by get a fever, but it may not be related to teething at all. Treat the symptoms with otc infant tylenol (acetaminophen) and if it persists then see your provider for care.

Urgent! : Take your baby to the doctor. Teething or not.

No: There is no evidence that teething causes this level of temperature elevation. Baby is sick. Consult your pediatrician.