That's not necessarily a problem. Did you switch the climate system from a/c to economy recently? With the a/c switched on the electric cooling fans will run on low speed much of the time, keeping the coolant temperature at ~85. On economy the fans don't run until the coolant reaches 105, then they switch on high speed.

It's quite possible your engine driven viscous fan clutch is bad; it should engage as the coolant temperature rises and draw additional air through the radiator.

- JimY