Notices. 1  2017-08-27: Support will be closed on Monday, September 4, 2017 for the Labor Day statutory holiday; we will reopen at 7am (Pacific) September 5. 2  2017-08-02: Introduction to Intranet Administration Webinar | September 6, 2017 | REGISTER NOW.
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.
From May to September in Las Vegas, nighttime temperatures stay above 50 Â°F. In July and August, the thermometer rarely dips below 70. On about half of winter nights the temperature does drop below 40. Freezing weather in Las Vegas happens an average of eight nights a year. Average number of days monthly in Las Vegas that stay above 50, 60 or 70 Â°F.