Yeah as it would trap heat wich is normally a bad thing but right now would helpBe outside is not by choice but unfortunately "the boss" won't allow it in the house . I have an old kitchen cabinet that I may try and rig up as grow box. With a thermometer sitting right beside the pot, it is showing approx 12 Celsius. If I can rig up the box(and not create a fire hazard) im sure that would help with temps.