I always love to see data analysis on tolerable weather. I've done a lot of research on weather in the US and its a perpetually challenging problem. There are a small list of cities where its consistently nice (Solely in california and miami), and a larger list of cities that are have 4 nice seasons. But the data will never tell you the full story - Denver doesn't rank incredibly well in the data but the winters are mild and the summers surprisingly hot because its always sunny and closer to the sun. SLC ranks well, but has unbearable smog. It seems that every city has caveats that can't be captured in the data. Portland seemingly has great weather.. when its not raining.