Numbers outside of this range are extreme weather.

Hot Weather: This argument might have been valid like a century ago but it clearly hasn’t been valid for billions of people around the world (including parts of the US) that regularly sees temperature crossing 38 C (100 F) in the summer. This includes Middle East, Africa, South Asia, Southeast Asia and I’m sure more places too.

Like, it’s not extreme if it’s expected every year. And I’m not taking 39 C. Where I lived, it reached 49 C (120 F) every single summer. That is summer.

Cold Weather: And this is also true for so many people around the world who live in places where temperature, every winter, goes below -18 C (0 F). Like, that’s not a billion people, but that’s still in the millions (Canada, Russia, Scandinavia etc.) We’d have to use the - sign every winter no matter which system we use, Celsius or Fahrenheit. Just like the billion+ people I talked about above.

People used to the Celsius system, especially those living in areas where it frequently goes below freezing, are well versed with the - symbol. We know the difference between -5 and -10 like we know between 0 and 5.

Again, Americans can keep their F and their LBs and their Miles and their every other unique charm. But it’s also funny when they try to prove that it’s somehow better or more natural. Like, it’s natural and rational to you.

Boiling water feels really fucking hot which is why Celsius makes more sense

Are people even capable of accurately perceiving a difference of 1 or 2 degrees in either system? I'm putting on a jacket if it's 9 or 7 celcius outside anyway. Struggling to think of any human day to day situations where a difference of a degree or two changes the way most people act or feel.

If you need granularity, you can still get infinite granularity with decimals in either system.

0 fahrenheit is pretty much random when it comes to ordinary life. Well it's pretty random when it comes to anything.