Simple. In the northern hemisphere, wind moves clockwise. So the West Coast gets cold winds from Alaska, while the East Coast gets warm winds from the Caribbean

Simple. In the northern hemisphere, wind moves clockwise. So the West Coast gets cold winds from Alaska, while the East Coast gets warm winds from the Caribbean. That's why the West Coast is so cold until Southern California, but the East Coast is hot and humid all the way up to New York. That's also why Asia gets so many typhoons, but Europe gets none. I recently moved to DC and the area is downright tropical.