Question: what is the average temperature for a 12 year old boy?
Answer: Normal body temperature Most people have an average body temperature of about 37°C (98.6°F), measured orally (a thermometer is placed under the tongue). Your temperature may be as low as 36.3°C (97.4°F) in the morning or as high as 37.6°C (99.6°F) in the late afternoon.