I was down in Houston in 1980 for a well logging school, and wasn't comfortable until the temperature got down to 60 above (It was -32 when I got on the plane in ND). A lady walked into the hotel with her fur coat pulled up around her ears, shivering, lips blue and took one look at me in a nice light shirt and vest and asked me "Aren't you cold?". I just said "No m'am, this is nice weather where I come from." She looked at me like I was from another planet.
It ain't really the temperature for me... it's the light. Or the lack thereof.
I have been formally diagnosed with SADD (Seasonal Affective Disorder)... But they really can't tell what's going on for real. I will go out for up to 72 hrs at a time, and may be thrown hard to sleep for a couple weeks or more...
Pretty sure I have a reason... I think melatonin pickup does not work well in me. without sun for so long in the winter, no vit D to initiate meletonin pickup, I come fairly close to literal hibernation.
Whatever it is, it is in the sun. When we go damn cold and the clouds freeze and fall to earth, that brilliant sun perks me right up, and I am more alert and functional than I have been since turkey day or so...
It's a thing.