Operating temperature is not always the center of the gage.
At this time of year in most of the US and Canada, be lucky if the thermostat opens fully afte the car has been idling or doodling around. Something around 180 to 190* F.
After a long drive uphill, or a couple hours at freeway speeds, might get that up to 200 to 210*F.
In hot weather it will run a bit hotter.
Anything between 170 and 230 is normal warmed up temperature as long as it makes sense based on conditions. Immedietely after shutting the engine off, coolant temperature will rise a bit.
This is from a 1975 Owners manual. Get a '73 and it will say about the same thing.