Higher temp=lower humidity?

Hey all, I know there have been lots of questions regarding humidity. Sorry to post yet another, but mine [I]is[I] different :rolleyes: I have been monitoring temps and humidity in my new rack with an Accurite weather station for about a week. The temp fluctuates just a little, but stays between 90-93* hot side and 79-84* cool side, so I'm happy with that. The one thing I have noticed is that when the temps are on the warmer side, my humidity drops to 49-50%, but when they drop to the cooler temps, it rises to as much as 75%. I'm confused :weirdface
Should I be concerned about the fluctuation of the humidity, or just be worried if humidity drops below 50% for a significant period of time?
Here are some pics: I am monitoring the center shelf right tub and currently, all tubs are empty except for a water bowl in the one I'm monitoring.
http://i273.photobucket.com/albums/j...s/100_1779.jpg

http://i273.photobucket.com/albums/j...s/100_1782.jpg

Thanks in advance.

Higher temps will dry out the air, not as bad as a lamp, but it still will. It will evaporate water faster, which adds more humidity, but then it heats up more and gets dryer. Plus, your tubs are quite high, and that will also fluctuate humidity.

It's not much to worry about though, you could always add holes to regulate air circulation in the tubs to reduce fluctuating humidity.