My world has a continent in the northern hemisphere that lies primarily in the Ferrel cell where the westerly winds are. The continent is fairly large, just a tad bit smaller then than North America. On the East coast there is a mountain range running from the top to the bottom of the continent, it's biggish. Tall enough to have snow, but not ridiculously massive.
My problem is I want to have a region further east of these mountains, between them and the sea, that has a climate similar to that of Baltimore or just the general area of the East Coast United States. However I am unsure as to how this would be possible given the geography of this continent.
So, how can I make this possible? Or is it completely impossible?