May in Las Vegas features sunny, dry weather with very warm to hot afternoons and cool to comfortable nights and mornings.
Daytime high temperatures tend to be near 85-86 F (29-30 C) early in May but warm quickly to 92-94 F (33-34 C) near the end of this month.
Overall, May usually sees about 16 days with highs at 90 F (32 C) or above with 3-4 of these reaching or exceeding 100 F (38 C).
The record high temperature in Las Vegas during May is 109 F (42.8 C).
Late night and early morning low temperatures generally will be 61-63 F 16-17 C) early in May, but warm to 66-69 F (19-20 C) near the end of this month.
A few of the cooler mornings, especially early in the month, can dip down near 52 F (11 C).
The record low temperature in Las Vegas during May is 40 F (4.4 C).
Clouds and Rain
About 18 days this month will feature sunny skies, about 8 will be partly sunny and only 5 will be mostly cloudy.
On average, only 1 day this month will have measurable rainfall.
Daylight hours increase this month from about 13.7 hours on the 1st to 14.4 hours by the 31st.
The wind in Las Vegas this month is mostly light to gentle, averaging 4-12 mph (6-19 kph) but occasionally can be moderate at 13-18 mph (20-28 kph).
What to Wear in Las Vegas in May?
Temperatures can have a large range between the early morning hours and mid-afternoon.
A windbreaker or sweater will suffice for the cooler late nights and early mornings, but light summer attire is recommended for the very warm to hot afternoons.
There is ample sun here in May so don’t forget your sunscreen, sunglasses, and a good pair of walking shoes.
Things to Do in Las Vegas in May
With the weather warming up a lot this month, you might want to consider some indoor activities in Las Vegas.
Alternatively, there are also a lot of fun things to do at night when it cools down a bit.
There are always a lot of musical artists coming to Vegas throughout the year, and there will be plenty of great concerts to choose from during the month of May.
If you're a fan of wrestling, make sure to get your tickets fast!
If you are willing to brave the hot days, consider going to a baseball game!
There will also be plenty of great comedians performing stand-up this month, which is another excellent idea for an indoor activity.
To be honest, there are so many fun activities this month that we can't list them all here. Thankfully, we have them all listed on our post covering things to do in Las Vegas in May!