How old are the batteries in your Accurite? Have you changed them since you purchased it? The reason I ask is that I've experienced bad humidity readings with low batteries. As a matter of fact, that was one of the reasons I switched to Western Digital hygrometers.
Also, Accurites, as much as we love them, are not the most well made precision measuring device. You get what you pay for, and there is a chance your's is not reading correctly. Have you checked it against another hygrometer in the same tub? I agree with Aaron, 49% shouldn't be causing humidity issues.









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