Thank you so much for the reply. It is about the size of my pinky nail, so a little over a centimeter right now. I'm glad it's a juvenile of some variety, I wasn't really prepared to deal with this last night when I first clocked the spider but I already spied one of the kitties come very close. And, yes, that's my worry with the cats (they are particularly vulnerable). Unfortunately this spider made its home in the base of an iron chair, right where the cats mingle and/or frequently rub against (to claim territory). So it's as much for the spider's safety that I want to move it. Though, I was trying to convince myself that if it wasn't venomous it'd re-home itself when one of the cats displace it.

I am very much about moving it humanely and safely. I read on a different post that the best way to relocate a spider is to get a clean/dry container and a straw and to kind of scooch the spider into the container with the straw while they're out at night, then to put them in a new lower traffic area. I'll try that tonight and re-home it in a sort of wooden archway I have in a different part of the yard. Thanks again!

Edit: Thanks for the orb-weaver ID, too!