How is it so hot during summer nights compared to winter nights even though in both instances the sun is not here to keep it that way?

Question

So I live in Poland, it’s midnight and it’s currently 23 degrees Celcius. What I’m wondering is how come it’s still so hot even though there is no sun to keep it that way (mind you, it’s cooler than it was during the day)? It almost feels like there is something in the air that holds the temperature better.

In: Physics

Answer 1

During the summer the sun is at steeper angle in relation to the earth, thereby allowing more UV Rays to be converted into infrared energy stored within the molecules. That infrared energy is stored at higher quantities and is slowly dispersed throughout the night, keeping it warmer.

In the winter, the UV rays are coming in at a more acute angle which allows for less of their energy to be converted into infrared, making the nights colder. Hope that makes sense!