in celsius:

50 hurts to the touch, your chip has likely broken and given off its black smoke 30 is good for swimming in cold water >25 is worth worrying about sun stroke. make sure to drink a lot of water 24-26 is a nice summer day 18-22 is comfortable room temperature >15 is good enough shorts weather 0-10 needs at least a light jacket <0 you have to be attentive about frost bite, but not worried -5 either wants gloves or good pockets -15 wants a sweater and jacket < -15 you should probably plug in your car -10 - -25 is good downhill skiing weather -20 - -27 is right cold, full winter gear: toque, scarf, mittens, thick socks, the whole kit and kaboodle, but still chic -30 - -40: ski version of the full winter gear, including snow pants, double socks, and good boots. both your warmest sweater and ski jacket

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its really just what you grew up with that will make sense.

like, wtf is 72 and 54 and mid 80s? i have no backing reference to put them into scale, even after living in the states for a decade. 500, 275, 425, 150 do make sense in F for me because thats what ovens list