January is really hit or miss in CO. You can almost guarantee it'll be colder than eskimo pussy, but as far as snow goes, it tends to be the driest month of the winter. But, then again, we've had some great Januaries too.
Yeah, I've been spending winters in CO for the past, oh... 25 years maybe, seen many of them. Jan is the winter break for my kid though so it's the only time she can get out with me. We'll see though. So far the only non-negotiable trips are Val and whistler because flights are already booked.