Red dwarfs are the most common type of star in the Milky Way. They are much smaller and cooler than our Sun. The average temperature of a red dwarf is around 2,500-3,500 Kelvin (2,227-3,227 Celsius).

It's important to note that:

* Red dwarfs have a wide range of temperatures. Some red dwarfs are hotter than others, and some are cooler.

* The temperature can vary depending on the age and mass of the red dwarf. Younger red dwarfs tend to be hotter, while older red dwarfs are cooler. More massive red dwarfs are also hotter than less massive red dwarfs.

Therefore, 2,500-3,500 Kelvin is a general average, but the actual temperature of a specific red dwarf can be higher or lower.