<P> The climate of the United States varies due to differences in latitude, and a range of geographic features, including mountains and deserts . Generally, the climate of the U.S. becomes warmer the further south one travels, and drier the further west, until one reaches the West Coast . West of the 100th meridian, much of the US has a cold semi-arid climate in the interior upper western states to warm to hot desert climates in the far southwestern US, while a Mediterranean climate prevails along the California coast . East of the 100th meridian, the climate is humid continental in 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 . Southern Florida is tropical, as are Hawaii and the US Virgin Islands . </P> <P> Higher - elevation areas of the Rocky Mountains, the Wasatch, Sierra Nevada, and Cascade Range are alpine . Coastal areas of Oregon and Washington have an oceanic climate . The state of Alaska, on the northwestern corner of the North American continent, is largely dominated by a subarctic climate, but with a subpolar oceanic climate in the southeast (Alaska Panhandle), southwestern peninsula and Aleutian Islands, and a polar climate in the north . </P>

Where are dry summer tropical climates found in the us
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