As someone who has used a glasstop humidor for years--with all the advantages of watching that hygrometer go through daily adjustments as the temp in my house varies--I can tell you this:
As the temperature in my humidor changes, the RH reading on my digital changes. Usually as the temp climbs, the RH climbs, too (I think.) Temp & RH go through cycles of +/- 3-5 degrees over the course of a few days. At any given time, my RH is somewhere between 60-65%, with temps 68-72. Except in the winter, when things go all haywire.
What does this all mean to me? Absolutely nothing. My cigars have always smoked fine. Better even, since resealing my humidor last winter.
Among beer brewers we have a saying: Relax. Don't Worry. Have a homebrew.
I'd suggest the same for cigars.
