I was talking about internal temperature. Cold climate results in low humidity. If you're mostly heating your home (as opposed to running aircon 24/7), air ins

I was talking about internal temperature. Cold climate results in low humidity. If you're mostly heating your home (as opposed to running aircon 24/7), air inside tends to be of lower humidity than outside. So low that it becomes uncomfortable and one has to use humidifiers. The only place mold has any chance in those conditions are the leak spots on the fridge door seal.