This is probably the best I know of.
http://www.crh.noaa.gov/bou/?n=forecast
In the mountains in the fall you have to presume you'll go from 60 degree sun, to snow in minutes followed by a freezing night and a fresh fall of snow that was never forecast. The mountains generate their own weather. Last Monday the forecast was clear blue skies and that was accurate except for the very top of Pikes Peak where some local weather lingered. I was up there hunting marmot and the weather went from massive winds, to warm sun, to freezing rain and back in the space of 20 minutes.
Weather reports in CO are only good for predicting storms and even then they often deflect of the long range forecasted path. In Colorado we don't trust anything past 3 days and even look at that with skepticism. I can't tell you how many times we've been told to prepare for feet of snow only to wake up to a light skiff, which isn't as annoying as not hearing anything about a storm and waking up to a buried car!
The best plan is to make sure you have a radio if camping out in the field and check for forecasts at least daily. Bug out if you have to. When it snows in the mountains it really snows. There are plenty of stories of people who have left their hunting trailers until spring time after being helicoptered out!
weather teports for co
