CPU cores have a temperature near 80 °C and then the fan starts to work. Can it be dangerous? (not for Core)
Intel CPU is designed to work up to 125 C
Your Mac will auto-shut down at 105 C
So the 85 C is almost normal temperature.
Download an install Intel Power gadget made by Intel  to see most acuate information about your CPU
Opinion:
In my opinion the Macs Fan Control is for people who like to play around, your Mac is perfectly capable taking care of it self.