Wind chill, never really thought much of that term until I moved to Canada 18 years ago... When it says feels like -38c, do not go outside lol. I never knew how painful just a bit of blowing air can be!
Canada still has to get used to metric, or rather we use both for different things. Pool temperature and thermostats are usually in Fahrenheit while the weather reports in Celcius. Same with all other measurements, baking is a regular math problem here :)