This is the 292nd most frequent Portuguese word.
médio
"Medium," "average," or "intermediate."
Here, 'médio' is used as an adjective to describe someone's academic level, indicating an intermediate or average level.
Ele é um aluno de nível médio na escola.
He is a medium-level student at the school.
Here, 'médio' describes the relative temperature level compared to the norms of this season, meaning it is not too high nor too low but in the middle range.
A temperatura hoje está em um nível médio para esta estação do ano.
The temperature today is at a medium level for this time of year.
In this sentence, 'médio' characterizes the general or typical attributes of the intended audience, not specifically leaning towards extremes.