A baby's normal temperature range is generally between 96.8°F and 99.5°F (36°C to 37.5°C). Temperatures below 96.8°F are considered too cold, and above 99.5°F too hot. For measurement accuracy, rectal temperatures are best, especially for babies under 3 years old. A fever is usually considered a temperature of 100.4°F (38°C) or higher when taken rectally or on the forehead.

Details on Temperature Measurement and Fever

• Rectal temperature: Normal range about 97.9°F to 100.2°F (36.6°C to 37.9°C).
• Mouth temperature: 95.9°F to 99.5°F (35.5°C to 37.5°C).
• Armpit temperature: 97.8°F to 99.5°F (36.5°C to 37.5°C), less accurate.
• Fever is recognized when rectal, forehead, or ear temperature reaches 100.4°F (38°C) or higher, or armpit temperature is 99°F (37.2°C) or higher.

Important Notes

• Newborns have immature temperature regulation systems, so maintaining a stable temperature in the normal range is critical.
• If a baby under 3 months old has a rectal or forehead temperature of 100.4°F (38°C) or higher, medical advice should be sought immediately.

• Skin-to-skin contact after birth helps regulate the baby's temperature effectively.

Maintaining a baby's temperature within this normal range is vital for their health and comfort. Any persistent deviation requires medical attention.