Hot water is most often 10 degrees colder when it arrives at your machine from when it leaves your hot water heater. In washing terms, hot water is 130 degrees Fahrenheit (54.4 Celsius) or above. Warm water is generally between 110 and 90 degrees Fahrenheit ( 43.3-32.2 Celsius). Cold water is between 80 and 60 degrees Fahrenheit (26.7-15 Celsius).