SARS-CoV-2 seems to hate both dryness and humidity. It thrives in mid-range humidity, particularly the chilly but not freezing environments.

This take has held up pretty well. Look at how much more mid-range NYC is humidity-wise than the others:

https://twitter.com/JeromeRoos/status/1236733607902937089

Agree with you, that has been true. There could be something unique about this one though maybe. Instead of transmission it could be it just thrives better in one climate vs. another. It’s also very possible that climate isn’t playing or is having a very limited role as well.