When it came to readings as a temp as a kid

My mom always had to rule that if my temperature was above 99.6 rectal she was retaking it again later on that day. And if it was under 99.6 rectal she left it as normal.

99.6F is similar to 37,5°C, it was same like Alex77. Normally when my temperature was more than that critical limit, I could be sure getting the thermometer in my bum 3 times a day, and after having fever, the measuring was continued for further abou 1 week

My mom never had a rule my temperature it was always taken every four hours

Ya every 4 hours if sick. a fever rectally measured listed in most medical books says 100.4 or more. so temp of under 100 in my family was seen as normal.