13 degrees celsius-5 degrees-what is the difference between two temps?

The difference between 13 degrees Celsius and -5 degrees Celsius is calculated by subtracting the smaller temperature from the larger temperature. In this case, the calculation would be 13 - (-5) = 13 + 5 = 18 degrees Celsius. Therefore, the temperature difference between 13 degrees Celsius and -5 degrees Celsius is 18 degrees Celsius.