First off, you are the one who supports your snake. You must provide conditions that allow your snake to live and feed.
Snakes require a set of temps and a set of humidity. The most important is humidity, if they get to dry, they quickly stop feeding. It does not matter what temps are, in this case.
So you want to offer your snake a secure humid(50 to 70%)area with little to no air movement(drys them out). As well as choices of temps(65F to 100F. If you do that, your snake will grow and feed all year.
Open top(screen) tanks are the death of many reptiles. Particularly in winter. Good luck