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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.
Las Vegas Weather in July. July is the hottest month of the year for Las Vegas, Nevada. Most days the temperature rises well over 100 degrees Fahrenheit (38 Â°C). This page gives detailed information on the typical July weather for Las Vegas.