@Benji @JonKramer Yes, that is the natural humidity if you live in a wind tunnel. At the minimum have a steamer on at night, or you are a covid magnet. We, in Canada, usually have sealed windows. In fact, the new super houses need an energy air exchanger to stop the windows from raining.
@Benji @JonKramer If you seal the house, then you can get a natural 40% in the winter, which is good. Above that, the windows rain.
'Wind tunnel' was my term for a leaky house, which can go below 20%, which is bad.
@Benji @hasmis I grew up in Venice, single pane windows, house made of redwood in the 1930s. It was drafty but never too hot or cold. I really don't remember how it was heated... but no AC.
Here in Kentucky, this house was built in 1895. 3 stories, solid brick, original windows mostly. All single pane, all drafty. And all the worse for wear after 130 years. And all "protected" by the local historical zone laws that prohibit new energy efficient affordable windows.
But, my post was mostly a joke about it being zero degrees, not so much a complaint. Just for general info, zero (f) is COLD around here. I mean really cold. 20 is cold. But, this is a new normal. In the 80s we had a solid week of -20. Climate change is real. I know my windows suck, and I know what would be best to fix/replace them. I fix things and modernize as I can afford it... but really, the house stayed 70 degrees above the outside temp, so I'm OK for now.