My dad was always cold during chemo, and he still is usually pretty chilled, even 2 years later. He lost a bunch of weight too, so that played a role, but in general, his ability to warm up just isn't very strong.
Our doc said this is normal, and that we don't need to worry about it. We brought in some great sweatshirts, and we all laugh when he wears his stocking cap in June!
Blessings,
Jen