Las Vegas Weather Records
The above is a screenshot of weather records for the City of Las Vegas collected for the month of May during 1984. Gathered from the locale's McCarran Airport, the data shows a uniform precipitation throughout May: zero inches.
What does May, 1984 feel like now?
Weather records were retrieved from Weather Underground https://www.wunderground.com/history/monthly/us/nv/las-vegas/KLAS/date/1984-5