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The normal temperature inside your childâs body is usually around 37 degrees Celsius. Your child has a mild fever if their temperature is higher than 38 degrees Celsius. A high fever usually means more than 39 degrees Celsius.
Report Abuse. Normal body temperature is around 37Â°C or 98.6Â°F, although babies tend to be slightly hotter than older children. At this age, a fever is considered any temperature above 37.2Â°C or 98.9Â°F, measured under the arm.eport Abuse. That is high. Normal body temperature is around 37Â°C or 98.6Â°F, although babies tend to be slightly hotter than older children. At this age, a fever is considered any temperature above 37.2Â°C or 98.9Â°F, measured under the arm.