So fast autumn liao??

Today, on our way to the open market, I noticed that most of the tree has changed to yellow color. I don't think that last year when we first came to Delft at this time, all trees were in yellowish color. I check back some of the pictures we took that time and YES, all trees still very green that time. This year, our summer is not very summer. The temparature always below 20'C most of the time. May be this is the reason that why this year all trees turn yellow so soon. I just hope that winter won't be too cold this year, although most probably I will not spent my winter here!