Yes, cold weather is my enemy. Hot weather as well because dehydration is a real threat. I have had pain crisis with each temperature scale. I have to ensure that I layer clothing in the winter. In the summer under the AC I have to make sure that I have my arms and legs covered lightly because a crisis may initiate at any given time. When I was younger and would go swimming in the summer, I would always wonder what triggered my pain crisis afterwards. I finally realized that coming into an air conditioned home after swimming would trigger it and that I needed to go take hot shower and dress warmly immediately after swimming because the cold would trigger it.