St. George Weather in May
May is one of the perfect months to visit St. George, with daytime temperatures of 29°C (84°F) and lows of 14°C (57°F) at night. Rainfall is minimal, averaging just 5.2 mm (0.2 in) for the month.
Rainfall in St. George in May
This month experiences about 3 days of rain according to historical data, averaging 5.2 mm (0.2 in). When rain does fall, showers tend to be light and brief. Most days will be dry.
Temperature in St. George in May
If you're visiting St. George in May, expect perfect temperatures with highs of 29°C (84°F) and overnight lows of 14°C (57°F). Overall, the month follows a fairly predictable daily temperature pattern. With overnight lows of 14°C (57°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.If you're a fan of comfortable temperatures and drier conditions, May is a great time to visit.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our St. George's climate page.
St. George Temperature in May
Min Temperature
14°C (57°F)
Max Temperature
29°C (84°F)
Chance of Rain
8%
Precipitation
5.2 mm (0.2 in)
Rainy days
3 days
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in St. George typically rise from around 25°C (77°F) at the start of May to approximately 30°C (86°F) by the end. Nights are cool, with lows typically ranging from 9°C (48°F) to 14°C (57°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for St. George in May
Browse day-by-day weather records for St. George spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
St. George historical weather extremes in May
Based on 27 years of weather observations in St. George between 1999 and 2026, these are the recorded extremes.
- The hottest May day on record in St. George reached 42°C (108°F) (May 28, 2003).
Best Places in the United States of America in May
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in May →
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What to Wear in St. George in May
Warm weather calls for comfortable, breathable clothing in May. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Almost no rain is expected, so no need to bring rain gear.What To Do in St. George in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our St. George's climate page.
See the full St. George climate overview or explore weather in the United States of America.
