Las Vegas' climate is a subtropical, hot desert climate (Köppen climate classification: BWh), typical of the Mojave Desert in which it lies. The city enjoys abundant sunshine year-round; it has an average of about 310 sunny days per year. It is virtually free of tornadoes and ice storms. Dewpoints in the summer are exceptionally low, ranging from 40.6 °F (4.8 °C) to 44.0 °F (6.7 °C).
The summer months of June through September are very hot and mostly dry, with a July daily average temperature of 92.5 °F (33.6 °C), while nighttime temperatures often remain above 80 °F (27 °C). There are an average of 134 days of 90 °F (32 °C)+ highs, and 74 days of 100 °F (38 °C)+ highs, with most of the days in July and August exceeding the latter benchmark, and only occasionally failing to reach the former. Humidity is very low, often under 10%.