I smoke indoors so I would say about the same for all seasons.
I have a man-cave in my basement fully equipped with a bar and big screen. I've installed exhaust fans that vent outside and smoke both cigars and pipes there.
Sounds awesome! I read @cosmicfolklore 's post once about ventilation fans for us indoor smokers, and it sounds like an excellent idea. I plan to eventually install one in my living room where I do most of my smoking.