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 you are cold and so turn on a heater. You want it to heat up the room as fast as possible, so you crank it up to the highest setting. Once the room becomes warm enough, you turn it down the heater somewhat to maintain that temperature. Thus the room is the warmest after the period of the highest heater setting, not during that period.