From Borepatch, the difference between the temperature scales explained from a practical perspective:
Fahrenheit:
0° – You’re cold.
100° – You’re hot.
Celsius:
0° – You’re cold. (freezing point of water)
100° – You’re dead. (boiling point of water)
Kelvin:
0° – You’re dead. (Absolute Zero -460 degrees Fahrenheit)
100° – You’re dead. (-280 degrees Fahrenheit, slower but still dead)