How much humidity is too much?

[Alice]

I don't think high humidity is as bad to the snake as it is for the cage as it will raise chances of bacterial growth.

I agree. Here in Central Florida it is almost impossible to keep humidity down to 50% (that's called low humidity here ) In the summer our humidity is usually around 90 - 95%. Having high humidity does cause other problems that you have to watch out for though - like mold and bacterial growth.

I've never had any probs with the higher humidity - snakes don't seem to care, eat well, poop as they are supposed to, breed well, eggs are laid, and then hatch. The hatchlings also aclimate well to dryer climates.