The highest day temperature in May 2026 was 110°F. The lowest night temperature was 55°F. The average values for day and night temperatures during May were 96.2°F и 67.7°F respectivly.

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

Precipitation total in May for Tucson is 0.1 in. It makes may one of the least rainy months of the year.

The average wind speed in May is 7.5 mph. This value is relatively stable throughout the year.

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 Tucson in May is 12.9 hours.