That's a tricky question! The Milky Way galaxy is a vast and complex place, and different parts of it have very different temperatures. Here's a breakdown:

* Stars: The stars within the Milky Way are incredibly hot, with surface temperatures ranging from a few thousand degrees Celsius for red dwarfs to tens of thousands of degrees Celsius for blue giants.

* Interstellar Gas: The space between the stars is filled with a thin gas, mostly hydrogen. This gas is very cold, typically around -270 degrees Celsius (-455 degrees Fahrenheit), just a few degrees above absolute zero.

* Supernova Remnants: The explosions of massive stars leave behind incredibly hot and energetic clouds of gas, reaching millions of degrees Celsius.

So, the answer depends on where you are in the Milky Way.

* Average Temperature: The average temperature of the Milky Way is likely to be very cold, dominated by the vast expanse of cold interstellar gas.

* Overall: The Milky Way is not a single entity with one consistent temperature. It's a dynamic system with extreme variations in temperature throughout.