Daytime - heat to 61-63 in winter if home (exception, heat bathroom to 65 while showering). At night or while away heat to 46 in winter. I don't own air conditioning, I usually just open a window if too hot. In summer I suffer horribly if the inside daytime temperature is over 78 or the inside nighttime temperature is over 63. At work, where I am not paying for it, I heat to 68-70, except in summer. No air conditioning at work either, I usually just open a window or door.
I would like to reduce the axial tilt of the earth to 0, and move to an area with an appropriate climate. Apparently this is impractical....