Wiktionary
low-grade fever
alt. (context medicine English) A slight fever, typically defined as never exceeding 38.5 degrees Celsius (about 101 degrees Fahrenheit). n. (context medicine English) A slight fever, typically defined as never exceeding 38.5 degrees Celsius (about 101 degrees Fahrenheit).
Usage examples of "low-grade fever".
He'd been running a low-grade fever, too, and he remembered that Norm Bruett had stumbled and needed help getting up the steps to the plane.
At first he felt a little better, seeing that the low-grade fever she had developed the day before had remained unchanged.