Nah, get a thermometer with a humidity gauge to tell.
If the humidity is below 50% you could be more comfortable.
Cold window panes will have condensation even if it's relatively dry in the house and making your house drier to boot.
In our old house w/2500 sq ft, in a day, I had no trouble putting 3-4 gallons of water into the air. It had single pane windows with storm windows for another layer of glass. There are lots of factors of course. Air leaks. opening of doors, etc. brings in air from the outside. Check some relative humidity tables. 80% relative humidity at 30 degrees outside brought inside and heated to 72 degree air has a relative humidity of 17%. Dry!
Link.
Alex
"There is a cult of ignorance in the United States, and there has always been. The strain of anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that "my ignorance is just as good as your knowledge."
-- Isaac Asimov