Sometimes, it is taxing during the springtime and the fall to know which thermostat setting you should use, the temperatures fluctuate so much, and I have a hard time remembering to absolutely check the thermostat, but during the springtime and the fall, you will find a official swing in temperatures.
During the afternoon, the temperature is likely pretty warm, this might change depending on chilly fronts and stuff rolling in.
During the night, the temperatures are consistently cold. This might mean that you have to turn on the furnace during the night and the central a/c during the afternoon! However, depending on the afternoon, you might also have to use the gas furnace during the afternoon. Some mornings might be perfect, meaning that you can turn your thermostat off completely. These temperatures shift afternoon by afternoon, and it can be very taxing to remember to turn your thermostat off or switch settings each time. Most often when I forgot to adjust the thermostat, I wake up in the middle of the night chilly or realize that I am dripping with sweat very badly during the afternoon, I know that there are thermostats that will do this whole process for you very easily, but they are luxurious, and in my opinion, those thermostats aren’t worth it. I recognize that it might be easier to set a reminder on my phone to remind myself to adjust the thermostat at least once at night and once in the afternoon after I have checked the weather. Trying to figure out which thermostat setting you should use is a lot of work.