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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.
December's weather is the coolest of the year for Las Vegas, Nevada. But that only means a few nights of frost and daytime temperatures in the 50s Fahrenheit (over 10 Â°C). This page gives detailed information on the typical December weather for Las Vegas.