The climate of the United States varies greatly, due to large differences in latitude, and a wide range of geographic features, including mount#ns and deserts. West of the 100th meridian, much of the US is semi-arid to arid, including desert in the far southwestern US. East of the 100th meridian, the climate is humid continental in the northern areas (locations above 40° north latitude), to humid temperate in the central and middle Atlantic coast regions, to humid subtropical in the Gulf and south Atlantic regions. The southern tip of Florida is tropical. Higher-elevation areas of the Rocky Mount#ns, the Wasatch and Bighorn mount#n ranges, the Sierra Nevada and Cascade Range are alpine. The climate along the coast of California is Mediterranean, while upper West Coast areas in coastal Oregon and Washington are cool temperate oceanic. The state of Alaska, on the northwestern corner of the North American continent, is largely subarctic, but with a cool oceanic climate in the southeast (Alaska Panhandle), southwestern peninsula and Aleutian Islands, and a polar climate in the north. The archipelago state of Haw#i, in the middle of the Pacific Ocean, is tropical, with r#nfall concentrated in the cooler season (November to March).好邦的气象变迁各类，由于好邦邦土面积雄伟，多山也有不少戈壁。
