Is 99.3 a fever in an infant?
Rachel Hickman
Updated on February 24, 2026
A baby’s normal temperature range: Under the arm is 97.5 to 99.3 degrees Fahrenheit or 36.5 to 37.4 degrees Celsius. Rectal is 100.2 degrees Fahrenheit or less, or 37.9 degrees Celsius or less.Click to see full answer. Likewise, what is considered a fever for an infant?A rectal temperature of more than 100.4°F (38°C) is considered a fever. In most cases, a fever is a sign that your baby’s body is fighting an infection.Beside above, what is considered a fever in 2 month old? Fevers are common in children, but for a newborn baby, a fever can be a sign of a dangerous infection. This is why children under 2 months should be taken to an emergency department in the case of a fever of 100.4 or higher. Most fevers in children are caused by viruses. Thereof, is 99.3 considered a fever? Normal body temperature can range between 97°F (36.1°C) and 99°F (37.2°C), with an average of 98.6°F (37°C). If you measured your temperature under your armpit, then 99°F or higher indicates a fever. Temperature measured rectally or in the ear is a fever at 100.4°F (38°C) or greater.What is a low grade fever in babies?“Low-grade” means that the temperature is slightly elevated — between 98.7°F and 100.4°F (37.5°C and 38.3°C) — and lasts for more than 24 hours. Persistent (chronic) fevers are typically defined as fevers lasting more than 10 to 14 days.