I keep mine in boaphile cages with a hot spot of 88-90 and cool side of 80ish during the day and 72ish at night.

I keep humidity around 50% except when they are in shed and I bump it up to 80% with misting.

You didn't ask, but i'll toss it in anyway. I fed twice a week until they were about 8 months old, once a week until they were about 24 months old, and now they are being fed once every 2 weeks.

My 2 are thriving in these conditions.
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1.1 Argentine Boas
1.1 Dumerils Boas
1.1 Black Milk Snakes
2.3 California King Snakes
1.1 Nelsons Milk Snakes
2.2 Corn Snakes