What humidity/temp for a Grey Banded Kingsnake?

I just picked one of these up a week ago, and I was under the impression that they are kept like any Kingsnake, 75 or so ambient with a 83-85 warm side and ~50% humidity.

I've found a few GBK specific caresheets and while half of them say my husbandry is correct, the other half say they like warmer and more arid enclosures. However, they only say 'low' humidity, and I have no idea what that means in %.

So should I be warming and drying this enclosure or is my husbandry for this snake okay?