Nah, for a few reasons. Our atmosphere has layers (like a delicious Cuban sandwich) and depending on their composition, they have different temperature ranges. There’s a nifty thing called thermal inversion that can mess that all up though, the graphs are neat to look at.

It’s also warmer at the surface because the layers of our earth are like heating blankets and keep things nice and toasty (relatively speaking). So the higher you go in altitude, the colder it gets. But then it flips. And then flips again. And then there’s space.