You should add the year of car and the mileage to your signature and your
location to your profile. Helps to know where you are !

The folks in North Canada and Alaska have different results than the Arizona
and Texas desert folks.

Now...

Running at a solid 80/82c in all temps is not uncommon.

If the radiator and cooling system are flowing perfectly and are not clogged
you can still get an engine that runs up when stopped in traffic.
Might go as high as 100+c almost 120c.

For mine it was the radiator fins clogged up and needed to be cleared.

It was really, really easy to pop out the radiator and clean out the fins.

There are products to dissolve crud.
I used water pressure, and air pressure and a shop vac to work all the junk
out and get the fins cleared so the air could get through.

My car runs a solid 82c even in 100+F .

__________________
80 300D 340K Owned 30 yrs
83 300SD 440K Owned 9 yrs - Daily Driver 150mi/day
02 Z71 Suburban 117,000
15 Toyota Prius 2600 miles
00 Harley Sportster 24k
09 Yamaha R6
03 Ninja 250