i have no expeirence with snakes but from what i have read the range will average around 75-95 i like to use discretion with what i read for reptiles in regaurds to temps and ill will keep the cool side a wii bit up so like 78 is what i would start with and the hot side 85-88 instead of 95 and monitor behavior and adjust temps until the snake seems to be at a comfortable state...thats what i do with my torts i dont know how snakes react to a fewdays of constant heat adjusments... take note that all reptiles are different as far as what temps they feel their best in but their are general species rule like 75-95 you just work with the snake to find at what temps the snake is optimum...thats my two cents