Ok sounds like you have some confusion on how to heat, measure that heat, and control humidity.
Your heat mat should be controlled by a thermostat first off. Never have an uncontrolled heat source directed toward your snake. That is first and foremost what should be on your mind.
Second, is the heat mat the only source of heat and what is your enclosure made of and how big is it size wise?
Next, what are you using to measure your heat in the enclosure and where is this thermometer located at? There are three crucial spots you need to test temps at: the floor of the inside of the enclosure under the hot side hide, the floor of the substrate on the cool side on or near the cool side hide, and the ambient temp or the air temp in the enclosure. If you are not measuring these with accurate means of taking temperature then you are not getting proper readings and running the risk of providing unwanted hot spots or cold spots for your snake.
There is a stickied care guide in this very sub forum that will help you better understand but it would be also helpful if you better described the snake's enclosure and how you are reading temps first.
If you need help converting Fahrenheit in these guides to Celsius, google is awesome for that. You absolutely do not need to convert to American temp readings at all.
Waiting to hear back with more information on your setup and your techniques for taking temperatures.