I will take 90+ all day, everday, all year. Period.
Yeah I can always put more on in the winter, but even when it was 100+ this past summer, my AC bill never was more than $75 to keep the house at 74 degrees. Natural gas is getting fucking ridiculous, and this -14 (currently, without windchill) makes for a killer gas bill and really painful joints.
When its that hot, its easy to get indoors and cool off, and it doesn't bother me as much to sweat as it does to shiver like hell (shutup E...).