Being in Canada when talking with very senior Canadians (from before metric times) or just People from the US, I know they are talking in American Freedom Units when it comes to this. When they say anything high 90s I suspect we aren’t talking about almost boiling water. Pretty much any number above 50 and I’m fairly sure they are still talking in American.

I also know when it comes to 37 in Phoenix in the first weekend of April it’s time to head back north to cooler temperatures of the mid 20s. I also know an American might think I meant Alaska with those numbers for April so it can get a little tricky there but it’s only the weather and not a lab experiment.