Contemporary Romance in October

What happens in the fiction writer's mind when the seasons change? If we're lucky nothing, because we are usually in the middle of a work in progress and unless we are great planners, that work is not necessarily set in the season in which we live. So as my favorite season is upon me, I can physically enjoy the sights, scents, and sounds of autumn. But mentally, I must remain in the middle of summer, when my current WIP is taking place. Sadly, I have to make certain that none of the things I am enjoying in my physical time bleed into my writing. After all, has anyone ever carved an Independence Day Jack-O-Lantern?