Phoenix · May
Run in the morning.
Average high is 93°F with a 67°F overnight low. Dry air (19% humidity) makes the heat more bearable than the numbers suggest. Dry month — only 2 measurable rain days on average. Dry heat climbs fast after sunrise — get out in the cooler morning hours.
Avg high / low
93° / 67°F
Humidity
19%
Rain days
2/mo
Wind
12 mph
What May feels like in Phoenix
Sunrise
05:27
Mid-month average
Sunset
19:21
Mid-month average
Time-of-day breakdown
Morning
Cool relative to the day's peak, but heat builds fast. By 10 AM you're already chasing comfort.
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 Phoenix in May
The kit for May in Phoenix: light, breathable, and moisture-wicking — singlet or short-sleeve only.
May vs the surrounding months
vs April
+6° avg high
0 rain days
Phoenix in April →
May
93°F avg high
2 rain days
Best: morning
vs June
-11° avg high
0 rain days
Phoenix in June →
Frequently Asked Questions
What is the best time of day to run in Phoenix in May?+
Morning. Dry heat climbs fast after sunrise — get out in the cooler morning hours.
What's the average temperature in Phoenix in May?+
Average high 93°F, average low 67°F.
How does May compare to surrounding months in Phoenix?+
Compared to April (avg high 87°F), May is warmer. Compared to June (avg high 105°F), May is cooler.
Does it rain often in Phoenix in May?+
Expect about 2 measurable rain days in May, on average.