The highest day temperature in May 2026 was 116°F. The lowest night temperature was 59°F. The average values for day and night temperatures during May were 99.9°F и 72.5°F respectivly.

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

Precipitation total in May for Tempe is 0.0 in. It makes may one of the least rainy months of the year.

The average wind speed in May is 6.7 mph. It makes May one of the most windy months of the year for Tempe.

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 Tempe in May is 13.0 hours.