September weather forecast and climate
Saint George, UT

What is the temperature in September in Saint George?

In September, in Saint George, Utah, the average high-temperature is 91.8°F (33.2°C), and the average low-temperature is 63.1°F (17.3°C).

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

In Saint George, Utah, during September, the rain falls for 2.6 days and regularly aggregates up to 0.6" (14.5mm) of precipitation.
Average temperature in September - Saint George, UT
  • Average high temperature in September: 91.7°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 September: 63.2°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 September - Saint George, UT
  • Average rainfall in September: 0.6"

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 September - Saint George, UT
  • Average rainfall days in September: 2.6 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 September - Saint George, UT
  • Average snowfall in September: 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 September - Saint George, UT
  • Average snowfall days in September: 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 September / Average sunshine in September - Saint George, UT
  • Average daylight in September: 12.4h

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 September: 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 September - Saint George, UT
  • Average UV index in September: 8

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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