I'll start. Fahrenheit is the superior temperature system for weather reporting. We should use metric for literally everything else, even Celsius for cooking, but I'll be dead in the cold ground before I abandon a system in which you actually get to experience both 0 degrees and 100 degrees. Freezing being 32 instead of 0 is literally the only downside, and it's not a hard number to remember. I'm prepared to die on this hill in the comments.
You could say the same for groups of fives under Celsius.
"It's in the upper 15s today"
Nobody talks like that.
You just say "around X" like you say for every other measurement.
Maybe in English they don't, I don't know