Fahrenheit makes it really awkward to think about whether it's wet, snowy or slippery ice outside. Celcius is great for that, emphasis on the phase transitions of water.
I think that falls under the same temperature intuition that people will naturally get about whatever system they're using. Just like you have to memorize that 70F or 20C are roughly room temperature, you have to memorize that 32F or 0C are the freezing point of water. I'll admit that this is a tiny point in favor of Celsius, but is mostly won out because thinking in terms of 0 to 100 is more convenient than thinking in terms of roughly -18 to 38, and a "tens" of Fahrenheit (like "it'll be in the 70s today"), is considerably more informative.
