The Las Vegas monsoon season starts in July. The old record was set in 1959 when there was no rain at McCarran between Feb. 22 and July 21. The difference this time is Clark County it started raining in July. This time,. Las Vegas missed an entire year of rain.
Las Vegas Loses an Entire Year of Rain
What does this mean ecologically for Las Vegas no-one really knows. This is unprecedented. Is it related to Trump withdrawing from the Paris Treaty? Climate change? Coal burning? Lack of clean fuel? Who knows.