What do you feel when you look out the window and see the following scene?
It seems sunny and you feel like going out to enjoy the sun, isn't it so?
But don't be mistaken. You really don't want to go out. It is very cold outside.
This is not that cold. But in a month or so, that 9℃ will be 0. Still, on a sunny day, if you look out the window, you will feel that it looks like the summer.