It doesn't matter if it's a coincidence or not. The fact that it works out that way still plays to its convenience and "good feel" in the US.
Arguing that it's a coincidence isn't really relevant.
I agree with the poster further up: I'm more or less good with all metric units expect temperature. While I still "feel" all the US customary units better than metric, I can intuitively "see" meters, liters, and kilograms. But Celsius continues to elude me, even after dating and being married to someone for 8+ years who grew up in a metric country.
I'm not sure you fully read my comment. It only works for 2018. If you did their analysis any other year, you'll get the 1st percentile is -4°F or something similar.
I only called out the "nearly exactly" part of the claim. US weather is approximately in the range of 0-100°F, give or take 20 degrees. But the analysis found 0°F to be nearly exactly the first percentile of daily highs and lows, to within a twentieth of a percentile point.
It's true that US temperature is around 0°F-100°F but usually false that those temperatures are the 1st and 99th percentile.
Arguing that it's a coincidence isn't really relevant.
I agree with the poster further up: I'm more or less good with all metric units expect temperature. While I still "feel" all the US customary units better than metric, I can intuitively "see" meters, liters, and kilograms. But Celsius continues to elude me, even after dating and being married to someone for 8+ years who grew up in a metric country.