The highest day temperature in May 2026 was 107°F. The lowest night temperature was 51°F. The average values for day and night temperatures during May were 91.7°F и 64.9°F respectivly.

Most of the days in May are sunny but you can also expect cloudy and gloomy days.

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

The average wind speed in May is 7.3 mph. It makes May one of the most windy months of the year for St. George.

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 St. George in May is 12.7 hours.