I have read past house moisture questions typically originating from the north. I am in a new two story home and each morning we awake to fogged windows upstairs. My fear is that moisture is also collecting in the CBS walls and not dissipating when the sun comes up. At present the night temperatures range from 75-80 and our indoor temp is lowered approximatedly five degrees to 71. Any information would be a big help. thank you in advance.