Question

Why do areas north of the Arctic Circle in the Northern Hemisphere experience a polar day lasting for several months during summer?

Answer 1

The areas are bent near the Sun throughout the polar days, is the right answer.  

The length of the days differs with the time of the cycle and the latitude at which the location is situated. One example of this case can be taken from the Arctic Circle; it is a place where people receive sunlight all the twenty-four hours throughout summer and night or darkness throughout every winter. The main reason why Arctic Circle in the Northern Hemisphere encounters a polar day is that the regions are slanted to the Sun throughout the polar days.

Answer 2

The tilt of the earth during its revolution around the sun causes the north pole to point away from the sun more than at any other time, thereby receiving no sunlight.