Have 3 DCs.
DS1 (10) has never to my recall complained of being hot or cold. He comes downstairs in shorts in the middle of winter, or in a jumper and jeans when it's 27 degrees, and gets irritated when told to get changed - he can't see what's wrong. Last night DH picked him up from football, it was hot and all the other boys were in t-shirts but DS1 still had his sweatshirt on as well and was pouring with sweat but it had not occured to him to take it off. He is a bright boy, kind popular and sociable but his personal organisation is poor, I think because things just don't occur to him.
DD is 8 and doesn't seem to complain much about temperature but always dresses appropriately to the weather and takes layers off/puts them on as needed. She is a very organised person however.
I just asssumed that temperature awareness was something that kids picked up when they were older. However, DS2 is 2.9 and has started to comment on himself being cold or warm, on my hands being cold when I got him changed, asking to have his coat on or off depending on how he feels and it struck me that neither of the other two ever did that at that age, but more importantly, DS1 still doesn't do it at ten!
Is there something the matter with him? Or is he normal and DS2 is oddly fussy and self-aware? Or is this just another part of DS1's Absent Minded Professor-ness?