The highest day temperature in May 2026 was 116°F. The lowest night temperature was 61°F. The average values for day and night temperatures during May were 99.8°F и 73.8°F respectivly.

Almost all days in May are sunny. There is very low probability of clouds or gloomy days.

Precipitation total in May for Phoenix is 0.1 in. It makes may the least rainy month of the year.

The average wind speed in May is 7.2 mph. It makes May the most windy month of the year for Phoenix.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Phoenix in May is 12.9 hours.