Las Vegas · May
Run in the morning.
Average high is 87°F with a 64°F overnight low. Dry air (20% humidity) makes the heat more bearable than the numbers suggest. Dry heat climbs fast after sunrise — get out in the cooler morning hours.
Avg high / low
87° / 64°F
Humidity
20%
Rain days
3/mo
Wind
15 mph
What May feels like in Las Vegas
Sunrise
05:34
Mid-month average
Sunset
19:40
Mid-month average
Time-of-day breakdown
Morning
Steady cool air, low wind, and good light. The standard runner window in most months.
Midday
Heat peaks here. Skip unless you've got shade and pace tolerance.
Evening
Cools off after sunset but still warm. Good for easy efforts; avoid hard intervals if you're chasing pace.
What to wear running in Las Vegas in May
The kit for May in Las Vegas: light, breathable, and moisture-wicking — singlet or short-sleeve only, a wind-blocking layer for exposed routes.
May vs the surrounding months
vs April
+7° avg high
+1 rain days
Las Vegas in April →
May
87°F avg high
3 rain days
Best: morning
vs June
-13° avg high
+2 rain days
Las Vegas in June →
Frequently Asked Questions
What is the best time of day to run in Las Vegas in May?+
Morning. Dry heat climbs fast after sunrise — get out in the cooler morning hours.
What's the average temperature in Las Vegas in May?+
Average high 87°F, average low 64°F.
How does May compare to surrounding months in Las Vegas?+
Compared to April (avg high 80°F), May is warmer. Compared to June (avg high 100°F), May is cooler.
Does it rain often in Las Vegas in May?+
Expect about 3 measurable rain days in May, on average.