The climate and weather conditions of Las Vegas cannot, as elsewhere, be viewed in isolation from its geographical location and terrain. Las Vegas is located in a dry basin that is surrounded by mountains. The city lies at an elevation of 620 m (2034 feet) above the sea level. The Mojave Desert region, in which Las Vegas lies, is naturally marked by rocks and dust.

The climate of Las Vegas is known as the arid desert type. Las Vegas usually has about 300 days of sunshine every year. The Las Vegas springs are markedly dry. Moist winds blow in July and August, occasionally leading to thunderstorms. 

Las Vegas is characterized by extremely hot summers. The daytime temperatures from June through September range from 34 °C to 40 °C (93.2F to 104F). The low temperatures at night vary between 21 °C and 26 °C (69.8F to 78.8F). Humidity dips to below 10 percent in the summers.

Las Vegas has short and mild winters. The daytime high temperature hovers around 16 °C (60.8F), while the nights sink to about 4 °C (39.2F). Snow rarely falls in Las Vegas, though neighboring mountains experience snowfall.

The yearlong rainfall in Las Vegas is merely about 110 mm (4.33 inches), with most of it occurring during the winter months, though it could just as well occur anytime during the year. 

As per the National Weather Service, the monthly temperatures in Las Vegas fluctuate from an average lowest of 4°C (39.2F) in December to an average highest of 41°C (105.8F) in July. Precipitation is notably low, varying from 0.30 cm in June to 1.24 cm in August. The percentage of humidity present in the atmosphere of Las Vegas ebbs to 18 in May, and peaks to 44 in December.

If you plan a spell of Las Vegas tourism, then you ought to factor in the expected weather conditions during the time that you plan your Las Vegas vacations. 

Know More About Las Vegas Weather