Temperature of space

Temperature of Deep Space

The temperature of intergalactic space is -270.37C or -454.67F. This is about 2.728 degrees above absolute zero and is the universal temperature left over from the immense temperature of the Big Bang.

There must be matter in order to have temperature, because temperature is simply a measure of the average kinetic energy of molecules or atoms. So if there is no matter present, the concept of temperature is meaningless.