The Portuguese word for temperature is
temperatura

Gender

The gender of temperatura is feminine. E.g. a temperatura.

The plural of temperatura is temperaturas.

temperatura
1. n-f. temperature (a measure of cold or hot)

febre
1. n-f. (symptom) fever (high body temperature due to disease)
O doutor disse que o rapaz está com febre. - The doctor said the boy has a fever.
2. n-f. (figuratively) craze (a temporary passion for a new amusement or fashion)
Esse estilo musical está se tornando uma febre. - This musical style is becoming a craze.