I am now on my first gamma sector snow planet and now i need warmer clothes, so i dont freeze to death. I was on a snow planet in beta sectors before and did not need my warm clothes. So do snow planets get colder with higher tier sectors or was it a illusion somehow?
Some of the armours give cold protection, while others don't, or give less. I ran into this same thing, so I suspect you did what I did, and upgraded to an armour that gives less cold protection