Is each family the same?

Is each family of snakes th same? Meaning Ball Pythons need around 80 - 90 degrees of heat, would that mean every other snake in the pythonidae family needs 80 - 90 degrees of heat such as reticulated pyhons and burmese pythons? Same thing for boidae and colubridae.

No. Temps and humidity are based on where in the world they come from and not necessarily on family grouping.
For example, temps in Africa are different from that in South East Asia, so a ball python has higher temp requirements than a blood python.