OK now I'm confused

[alfbacca]

I've been at this new place for a month now. My humidors were in a hallway closet but after the humidity climb I put them in the living room.

What I noticed is that whenever I open the humidor, the hygrometer shows the humidity climb up about 1% every minute the humidor is left open. Then when I close them and check on them later, the humidity goes down to 68%.