ELi5: In the Northern Hemisphere, why are the typically warmest days of the year after the longest days of sunlight?

Question

ELi5: In the Northern Hemisphere, why are the typically warmest days of the year after the longest days of sunlight?

In: 4

Answer 1

Imagine putting food in the microwave for ten seconds. That’s a warm day.

Put it back in for another twenty seconds. That’s an even hotter day. The food is now hotter.

Then you put it back in for ten more seconds. Sure, that’s not adfing as much heat as the hotter twenty-second ‘day’, but it’s still adding heat so the food is still hotter afterwards.