May weather forecast and climate
Saint George, UT

May, the last month of the spring, in Saint George, is also a warm month, with temperature in the range of an average high of 85.8°F (29.9°C) and an average low of 58.6°F (14.8°C).

Temperature

In May, the average high-temperature is 85.8°F (29.9°C), and the average low-temperature is 58.6°F (14.8°C).

Rainfall

In Saint George, in May, it is raining for 2.2 days, with typically 0.2" (5.3mm) of accumulated precipitation. In Saint George, during the entire year, the rain falls for 44.6 days and collects up to 8.8" (223.6mm) of precipitation.

Snowfall

In Saint George, during the entire year, snow aggregates up to 1.4" (35.5mm).

Daylight

The average length of the day in May is 14.2h.

Sunshine

The average sunshine in Saint George, Utah, is 12h.

UV index

In Saint George, the average daily maximum UV index is 9. A UV Index of 8 to 10 symbolizes a very high health hazard from the exposure to the Sun's UV radiation for average individuals.
The average daily UV index of 9 in May transform into the following instructions:
Take extra precautions. Fair-skinned individuals may get burned in less than 10 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise.

What is the temperature in May in Saint George?

In Saint George, in May, the average high-temperature is 85.8°F (29.9°C), and the average low-temperature is 58.6°F (14.8°C).

How many days does it rain in May in Saint George?

In Saint George, in May, during 2.2 rainfall days, 0.2" (5.3mm) of precipitation is typically accumulated.

How many hours of daylight does Saint George have in May?

In May, the average length of the day is 14.2h.

How many hours of sunshine does Saint George have in May?

In Saint George, Utah, the average sunshine in May is 12h.

What is the UV index intensity in May in Saint George?

In May, the average daily maximum UV index is 9. A UV Index estimate of 8 to 10 represents a very high health vulnerability from the exposure to the Sun's UV rays.
Average temperature in May - Saint George, UT
  • Average high temperature in May: 85.8°F

The warmest month (with the highest average high temperature) is July (101.4°F).
The month with the lowest average high temperature is December (51.9°F).

  • Average low temperature in May: 58.7°F

The month with the highest average low temperature is July (74.5°F).
The coldest month (with the lowest average low temperature) is December (30.6°F).

Average rainfall in May - Saint George, UT
  • Average rainfall in May: 0.2"

The wettest month (with the highest rainfall) is January (1.4").
Driest months (with the lowest rainfall) are May and June (0.2").

Average rainfall days in May - Saint George, UT
  • Average rainfall days in May: 2.2 days

The month with the highest number of rainy days is February (6.1 days).
The month with the lowest number of rainy days is June (1.5 days).

Average snowfall in May - Saint George, UT
  • Average snowfall in May: 0"

The month with the highest snowfall is January (0.7").
Months with the lowest snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in May - Saint George, UT
  • Average snowfall days in May: 0 days

Months with the highest number of snowfall days are January, February and December (0.2 days).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

Average daylight in May / Average sunshine in May - Saint George, UT
  • Average daylight in May: 14.2h

The month with the longest days is June (Average daylight: 14.7h).
The month with shortest days is December (Average daylight: 9.7h).

  • Average sunshine in May: 12h

The month with most sunshine is June (Average sunshine: 13h).
Months with least sunshine are January and December (Average sunshine: 7).

Average UV index in May - Saint George, UT
  • Average UV index in May: 9

The month with the highest UV index is July (UV index 11).
Months with the lowest UV index are January and December (UV index 2).

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