Send all the cold my way! :D As a native of winterland, civilized temperatures end at 20°C (68°F); anything above that is too hot for clothing i.e. civilization. Before, it used to be that there were but a few days of summer when it went above 25°C (77°F), but global warming means that now we get weeks of temperatures above 30°C (86°F) and I melt. (The temperatures from -2°C to 1°C are pretty miserable if wet, too, since all that slush and ice.)

On the insulation front, perhaps thick curtains could help? As well as mats. Block drafts from doors and windows with textiles and special doorstop things that look like stuffed snakes.