I sat for a very long time and the night got cooler, degree by degree, ticking them off like a clock.
The only way that degrees can drop is one by one, as the intermediate value theorem says: if a function is continuous on a interval, then it takes all the intermediate values in said interval, i.e. if we admit that temperature is a lineal function, it can´t go down two degrees suddenly, unless you have a very low sensitivity thermometer. You can see this linearity of the temperature especially in mercury thermometers, where there can´t be little jumps