Hi Joanna,
My basement stays in the 60 to 70 range most of the time. I have an indoor/outdoor temperature probe buried in the bin and a nearby heat duct in the ceiling which keeps it a little warmer if the basement temperature drops. The main problem I have is keeping the bedding wet enough. Even with a cardboard cover right on top of the bedding. Very low humidity in the house, especially during the winter months. I'll be setting up the indoor plant starts down there pretty soon which will help add some moisture.
