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The weather varies greatly throughout the year in Las Vegas â the winter months are dry and cold with short days and long nights, whilst the summer months are blisteringly hot with long days and short nights. Las Vegas is located in Nevada in the Mojave Desert.
There are generally about 70 days per year when temperatures exceed 99 degrees Fahrenheit in Las Vegas. The city has a subtropical hot desert climate, which is to be expected considering it is in the Mojave Desert. Average high year-round is 80.1 degrees Fahrenheit, and the average low is 58.7 degrees Fahrenheit.