The main problem comes with negative Celsius temperature (basically 32F) as freezing point is quite important traffic wise. Driving on ice/snow is quite a chang

The main problem comes with negative Celsius temperature (basically 32F) as freezing point is quite important traffic wise. Driving on ice/snow is quite a change and basically occurs around 33F-32F, in Celsius it that's zero, much easier to remember. Then you have 100F which is supposed to be the normal body temperature, but actually it means having fever. There is only one case you might wish to use a tenth of Celsius in every day life and that's reporting body temperature around 37C-39C. Like I've said, scaling is weird, it doesn't make much sense when firstly introduced. I have a friend who graduated MIT (PhD in aerospace engineering), living in the US for over 10 years and he is comfortable doing calculations and every day estimations in imperial units, except for temperature.