Temps have to be really pretty low for that. I actually looked the VPD chart up at your suggestion(a good one btw). Cannabis likes to grow from 70-mid 80’s f(in general). For the VPD to be in a good range at 35-40% humidity, you want temps in the really low 60’s. That will give you nutrient uptake issues. Throwing a humidifier in a room is a pretty easy fix. My plants didn’t like the low humidity. In flower, lower rh is what you want so you avoid mold and powdery mildew. Your plants look really nice though tokey so buzzkillz may want to follow your lead. I was just telling him how I go about it.