Im 5'8 in the morning and 5'7 in the evening.
The thing is, Im on the border between the two, and it's a scientific fact that people lose two centimeters of height during the day due to constant gravity pressure. Either that, or I slouch 2 centimeters every time my height is being checked.
Anyway, I'd say Im fairly average height, although I would've liked to have been a bit taller. Maybe an inch or so. Im 17 so I might be able to finally reach the permanent 5'8 mark by 18..