The day time temp for a leopard gecko enclosure should between the upper 80s and lower 90s on the hot side and mid 70s on the cool side. Night time temps should be anywhere between upper 70s and lower 80s. Your humidity should be between 30% to 40%. Be sure to keep the humidity up during their sheds. If the humidity happens to fall during a shed and the gecko doesn't shed properly just up the humidity in the moist hide and inspect their toes afterwards. You want to be sure to remove any stuck shed on the toes during a warm bath so that they don't lose them from cut circulation. Just decided to mention that because its a common thing that happens.