I think it's because I used to live further south where the summers were long and hot, and now that I live where I do it seems that summer lasts a couple of weeks before fall is on its way again. So I treasure the heat while it lasts.
Anyways, I have been outside, testing out a new camera and just enjoying the greenery and the flowers that has sprung up within the last week. The growing season here is pretty short, so when the warmer weather hits everything just grows like crazy. (There is a birch tree in the front yard that went from leafless to completely covered in leaves within the space of 5 days.)