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.