Our Southernmost, Frost-Free, Tropical city has the best weather in the continental United States. Without a doubt Key West has the best diving, snorkeling, fishing and boating the continental U.S. has to offer. With a laid back attitude like a summer breeze off the ocean, the people of The Conch Republic know that a comfortable hammock and a frozen margarita are much more fun than rush hour traffic or shoveling snow.