It's well established that poor weather has adverse effects on voter turnout.
I wonder how much of this effect is precipitation and how much is temperature, though. I can see a casual voter deciding to stay home on a rainy day, but rain is not that well correlated with the season.
I don't want to start one of those silly Atlas debates about what
really constitutes winter or cold, but throughout the country, early November isn't all that cold by local standards. I have a harder time imagining people not going outside on a clear November day.