Room Temperature for Baby. Some new parents wonder what room temperature for baby is safe and comfortable. Experts recommend maintaining a room temperature between 65 to 74⁰F, which can be monitored more easily with a room thermometer.Maintaining a comfortbale temperature for your baby's room can help your little one's sound sleep.he ideal temperature for a baby's room at night is between 65-70⁰F. Like adults, they tend to sleep more soundly when the temperature is slightly cooler than normal.