As mentioned earlier, Titan has an average temperature of approximately -180°c. This is very cold in comparison to Earth, but it is quite standard in comparison to other moons within it's region, and this is pretty much the same temperature as Saturn itself. The reason why Titan is this cold is because of it's distance from the Sun - Titan sees about 1% of the same sunlight that Earth does. So, it's quite easy to understand why Titan is so cold.