The County RV park near where we live will let you camp and will provide electricity, but they shut the water off end of October.
And we can go without significant Snow most of the winter, but don't count on that.
You can shuttle up to Eldora from Boulder, of find rides to other slopes.
There are several places where it can be done as long as you can get along without water. And can accept the possibility of getting buried in a sudden snowstorm any day.
Not for the faint of heart. (But then, if you're a boarder, so that shouldn't be an issue.)