re: Recommendations for a snowy Thanksgiving?

If you go Colorado you are probably going to want to be flexible.

Are you going to want to ski?

I'd consider somewhere around Yellowstone-Jackson Hole or Big Sky, or Alta in Utah. Thanksgiving Day is the first week a lot of ski resorts open but some of that is due to demand, but its also a sign of when the first realistic snows may happen.

Now if you are just looking for a little snow and don't need to sled then I'd think most of Colorado would be good.

We did Colorado in 2021 to visit my sister in Denver and it snowed in the mountains multiple days but not in the Denver suburbs off the mountains.