M&B wrote:

hey all, i've been having a problem for a while in the winters with
condensation forming on the windows.

Hmmm. As I understand it, water condenses according to two factors:
the amount of water IN the air, and the temperature differential
between the air and the condensing surface. So condensation can form
when the humidity is very high, or when the temperature differential
is extreme, or some in-between combination. You mention a measured
indoor humidity of 47% at a temperature of 65F. According to a nifty
little dew-point calculator

http://www.decatur.de/javascript/dew/

your dew point is about 44F. If the inside surface of your windows is
44F or lower, you will have condensation. Insulating your house and
attic will reduce heating costs, but if you have very cold window
surfaces, condensation will still occur.