I just got back from central america. Hot and wet I tell ya.
You hit the nail squarely on the head. As a rule of thumb, most colubrids readily use temps from 55F to 100F. As you mentioned, the extremes are for extreme reasons. hot temps are used for digesting large food bolus, injuries, cooking eggs/embryos or the shedding of their skin. Cool temps are to conserve energy when gaining energy is not available.
If you can offer that type of temperature range, your snake will prosper from it and you will learn for it. Or you can keep it at a very neutral temps of say 82F and gain very neutral results, and learn very little. Its really up the to keeper and what they want or their particular approach. Some ask the animals what they are and what they do, others tell the animals what they are and what to do.
As you and I know, in nature, their entire life if finding and using suitable temps to achieve maximum results for their tasks at hand. Cheers