I do not have the ability to develop at the moment. Hopefully I will within the next month or so. I am keeping both exposed and unexposed rolls in the refrigerator inside their plastic cases AND inside a plastic tupperware container. Is this ok for the time being until i develop?

Also, I am spending quite a bit of time photographing in cold weather (-5 F here today!). When I return from the cold and head into a heated house, is it ok the leave a half used roll in the camera inside or should I try to expose an entire roll with the temperature variations?