Now that I have gotten off the Obsessive Train in regards to the temps in the GH, I can't tell you much about the temps except that I have the heat thermostat set to 63ยบ. I still try not to "clock watch" the GH temp indicator in the house. I am happy to report that everything lives and thrives in my little GH. They seem to be happy and might even get more attention now than they do in the yard! I have some new seedlings that continue to put out leaves. In fact, I might have to repot them soon.
Before I speak too soon, our winter weather doesn't usually come until mid-January through February. I have leaky deck floors (that will be rectified next year!) and leaky windows. I have caulked, weather stripped, and placed insulation boards on the north side. Doing the best I can, I can only hope for the best. For now, I deal with leaves that stick on the roof and leave icky messes.. I will have to get a ladder to reach one side tomorrow.