It's been below freezing here for several days in the AM, heat has been on of course. We get a lot of sun in the AM which heats the place up nicely (and keep curtins drawn in summer). Our friends with south facing condos get hammered in summer all day but have various blinds of course. They rarely need heat in winter except at night.
We're off for a short trip up into the mountains, going to Gibb's Gardens again to see what it's like in early spring.