The summer months of June through September are very hot and mostly dry with average daytime highs of 94–104°F and nighttime lows of 69–78°F ; and most days in July and August exceed 100°Fs (38°Cs) but with very low humidity, frequently under 10%.

Las Vegas' winters are of short duration and the season is generally mild, with daytime highs near 60 degrees and nighttime lows around 40 degrees. The mountains surrounding Las Vegas accumulate snow during the winter but snow is rare in the Las Vegas Valley itself.[11] Several years apart, however, snow has fallen in the valley. Temperatures can sometimes drop to freezing (32°F/0°C) but winter nighttime temperatures will rarely dip below 30 degrees.

Las Vegas is the most populous city in Nevada. It is 28th in terms of population as of 2008 with 600,000 people. Las vegas is of course internationally know as a travel and gaming destination. It is know also as sin city because of it's tolerance of adult entertainment. Clark county is estimated as 1,988,146. Founded in 1905 Las Vegas officially became a city in 1911.

Las Vegas started as a stopover on the pioneer trails to the west, and became a popular town in the early 1900s. It was a staging point for all the mines in the surrounding area, especially those around the town of Bullfrog, that shipped their goods out to the rest of the country. The legalization of gambling in 1931 led to the advent of the casino-hotels, for which Las Vegas is famous.

Las Vegas is situated on the arid desert floor within Clark County. Correspondingly, the surrounding environment is dominated by desert vegetation and some wildlife, and the area can be subject to torrential flash floods.