A temperature of 37°C in a newborn baby is not considered a fever.

Dec 14, 2021 Source: Cainiu Health
Disease description:

My baby was just born today, and I just checked his temperature—it’s 37°C. Is this considered a fever?

Doctor's answer (1)
Dr. Liu Xiaorong
A baby’s normal body temperature ranges from 36.5°C to 37°C. Your child’s current temperature of 37°C falls within this normal range and does not indicate fever—so there’s no need for excessive concern. However, since newborns have relatively weak immune defenses, mothers should adjust their babies’ clothing appropriately according to weather changes to prevent cold exposure and subsequent colds. Additionally, supplementing the baby with an appropriate amount of calcium may help enhance their immune function.