yes, I did convert it. I just... every time I see a temperature in celsius, I get severely confused for several seconds.
Its a matter of developing an intuitive feel for the measurements by having a sufficiently large internal sample of familiar things. I know how big inches are, because the final joint of my index finger is that length. Similarly, the width of the nail on that finger is 1cm. I actually learned the meter first, and I have a feel for yards because they're close to a meter (which is the distance from the floor to a doorknob - mostly). Longer distances I think of in football fields.
Temperature's more difficult, because our sense of it is so dependent on things like how sunny it seems, whether its windy, whether the thing you're measuring conducts heat like metal (which feels cooler) or insulates heat (like wood which feels warmer since the heat from your hand doesn't get carried away as you hold the object). Your mood can even affect your perception of temperature.
Most people's skin temperature is 81F to 85F (27C to 29C) so a room with an air temperature higher than that feels "hot". A 20C (68F) room feels cool (some would say cold), but that's what employers and school officials like because you're more alert in that environment. 108F (42C) is a hot bath (unless you're Japanese, who appear to enjoy blanching themselves at 44C, 111F). That's painfully hot for me in water, again, because water is a great conductor. If I was outdoors in the shade, a 111F day would be really, terribly hot but I could probably sit all day in it because air isn't as good a conductor.