system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Could there possibly be any planet anywhere that is warmer during its night period?
gpt
Could be. 

If your definition of "night" is "the side of the planet pointed away from the sun", you could have a planet that's far enough away from the sun to not get any heat from it, but that is still volcanically active and for some reason happens to have cyclical eruptions on the far-side. This works better on a planet that's tidally locked to the sun and just happens to have more activity on the opposite side. 

There can probably be many other ways to have this happen naturally (maybe very heavy cloud coverage, and consistent meteorite strikes, or a natural satellite that somehow has turned into a huge curved mirror or something).