Back in late March, as I stood in 50cm (20 inches) of snow in the Finnish countryside, I was told that spring was in in the air.
This week, while staying at the same location on the river Kokemäenjoki, I have been walking around in shorts and T-shirts, enjoying the sunny weather and the temperatures in the mid-20sC (mid-70sF). Yet, I have heard from a couple of people and read in a blog that apparently it's beginning to feel autumnal.
Go fathom.