Much colder and drier areas. I'm from the Mid-west and although it's very humid in summer, we had many more colder, drier months. Most people coming from warmer or milder areas or tropical had problems, especially with the hard water. S.F. is such a small area compared to the rest of the States and this hard-a$$ed crap we call water. You're still coastal...but the more inland you get, that's where you get all this dry air etc.
My hair always grew fast and I could retain the length, but I did go through a period of not taking care of my hair. But when I lived in the Caribbean, it was so easy...even for my nails...no hand-nails. Folks who know me know it's true...that 1 inch per month growth for hair on average here was 3 inches monthly there. And I don't have thyroid issues either.