Summer's over?

I have blipped this building before but perhaps not from this angle. While I was out it looked as if rain clouds were gathering but now the sun is struggling to get through.

All through March and April the end of winter was much on our minds and we blippers consoled ourselves that summer was always getting nearer. And what a summer it has been.

Now we are approaching the backend of the year, days are shortening and we are on tenterhooks to see how long it will last. What chances an Indian summer this year?