We’ve reached the awkward time of year when mornings are too cold for a spring jacket, but afternoons are too warm for a winter one.
When observing pedestrians out & about, it’s easy to spot the early risers: they’re bundled up like it’s January. The late sleepers, on the other hand, are already enjoying spring.
Myself, I wear my spring jacket, regardless of the weather. (Which does seem like it would invalidate my hypothesis from the previous paragraph. Oops.)