August weather forecast and climate
Saint George, UT

The last month of the summer, August, is also a torrid month in Saint George, Utah, with average temperature varying between 99.1°F (37.3°C) and 72.9°F (22.7°C).

Temperature

In August, the average high-temperature is 99.1°F (37.3°C), and the average low-temperature is 72.9°F (22.7°C).

Rainfall

In Saint George, during August, the rain falls for 3.5 days and regularly aggregates up to 0.8" (19.3mm) of 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

Throughout the year, 1.4" (35.5mm) of snow is accumulated.

Daylight

In Saint George, Utah, the average length of the day is 13.5h.

Sunshine

In Saint George, the average sunshine is 11h.

UV index

In August, the average UV index is 10.

What is the temperature in August in Saint George?

The average high-temperature, in August, is 99.1°F (37.3°C), while the average low-temperature is 72.9°F (22.7°C).

How much does it rain in Saint George in August?

In Saint George, in August, it is raining for 3.5 days, with typically 0.8" (19.3mm) of accumulated precipitation.

What is the average length of the day in August in Saint George?

In August, the average length of the day in Saint George is 13.5h.

How long on average sun shines in August in Saint George?

In Saint George, Utah, the average sunshine in August is 11h.

How high is the UV index in August in Saint George?

In August, the average UV index in Saint George is 10.
Average temperature in August - Saint George, UT
  • Average high temperature in August: 99.1°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 August: 72.8°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 August - Saint George, UT
  • Average rainfall in August: 0.8"

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 August - Saint George, UT
  • Average rainfall days in August: 3.5 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 August - Saint George, UT
  • Average snowfall in August: 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 August - Saint George, UT
  • Average snowfall days in August: 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 August / Average sunshine in August - Saint George, UT
  • Average daylight in August: 13.5h

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 August: 11h

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 August - Saint George, UT
  • Average UV index in August: 10

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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