Plug in the location you're curious about here (this is the info everyone uses to make their best weather guess)
http://forecast.weather.gov/MapClick...7#.VfQ8NZm9Kc1
For Colorado roads plug in the one you want to know about. It's pretty accurate and Colorado is really good about trying to keep the roads plowed.
http://www.cotrip.org/home.htm
If you do hit inclement weather, take it easy - we hate cleaning up crumpled vehicles on the side of the road in a snow drift.
It's really easy to drive in snow once you get used to it. In the 70s as a volunteer ski patrol I drove my rear wheel drive muscle car to work no matter the road conditions - but I'd never do it now, too many people on the road who don't know how to drive in snow.