.I had a cousin in New Mexico telling me RH at 10% was not uncommon at all
Ed , I have no doubt that there is a difference betwen NM and Iowa, but I believe it would be better to call it a difference in absolute humidity or just humidity. When we speak of relative humidity, without mentioning the temperature, it is a bit like saying my bow pulls 45 lbs but not mentioning a draw length. The weather folks never cite a relative humidity, but usually use something more definitive like wet bulb temp.
As an experiment, these last few days the thread has been going, I have moved my humidistst from the window sill behind the counter, to a spot in the middle of the counter about two feet away. the relative humidity reading changes with the temperature
reading, but I doubt the water content in the air changes.
I just keep my bows in a cool spot, and they do not seem to dry out.