On the coast, so for the most par it is pretty tame, but northwestern CT has a couple of rolling hills. There is a bit of nordic skiing there, and generally when the snow comes in, it stick around for a while, unless you are right on the water.
How to Get There
Go to New England and head south towards the water. Approaches are shorter for XC skiing, and most people would say that CT is not a destination for backcountry skiing.