In hot weather, stuck in traffic, with cold air blasting from the vents, both our 98MY cars will run a constant 94-97C, with 100C occasionally.
Once traffic opens up, 85-89C is about the temp it falls to.
Open road in cool weather sees a constant 83C.
(BTW, I checked these temps with the PBU diagnositics mode, so that's why they are more accurate than the guess-the-gauge numbers)
1998 C230 "Black Betty"