Summer days are here at last,
Days of school are in the past,
Summer skies will turn to grey,
And summer's warmth will fade away,
Autumn comes and leaves fall down,
Winter comes, snow covers the ground,
Spring comes and brings new life,
And ends all of the winter's strife,
All the seasons come and go,
From the summer's heat to the winter's snow...

Katherine Knight

http://www.poemhunter.com/poem/changing-seasons-13/