I wanted to get ahead of something you're about to hear a lot about if you live in Missouri or Illinois if you haven't already. There are models that show big snow is possible, but you really shouldn't worry much - yet.
If you live in Missouri, more than likely you'll some amount of snow every winter. But, what Missouri places get the most average snow each year? I've found the top 20 who need to keep their shovels ready.
If you've ever heard Missouri's weather in March being described as "in like a lamb and out like a lion", it appears that will be true in December, too. But, it will be for a completely different reason.
I will admit that weather is hard to predict, so there's a good chance that I'm completely wrong and a dire prediction for Missouri and Illinois for the first week of December is accurate. Let's pray it's not.