The cities with the nicest weather in the United States are almost...

The change matters. Forty-five of the fifty nicest-weather cities stay the same, but ERA5 has a significant daytime high cold bias, causing a notable shift in the cities in the middle of the pack. Southern cities fall the most and northern cities rise the most: Florida drops 8.3 points on average and Louisiana 7.0, while Washington gains 4.7 and Colorado 3.4.

