WHY IS THE WEATHER IN PALAISEAU SO BAD ?

I always told myself that I would study and work in a sunny place after my "prepa" class, like in the south of France for example.
But the difficult choice appeared when I knew that I was accepted at Polytechnique . Actually, I had chosen schools to have sun and heat most of the time. In spite of this and on my parents' advice I finally chose to come to Polytechnique.
The first year began in April and the first months were a surprise. We could stay outdoors, going out in Paris whenever we liked.
But after the summer, a new era began. Since I've been back at school, I realize that I am in the north... If you like to wake up with the light on your face when opening your curtains, forget it ! If you are lucky, it isn't raining, only a very cloudy sky but don't be so optimistic....!