Climate in St. George, Utah

St. George, UT has a mild desert climate with hot summers and mild winters. The average high temperature in summer is around 100°F and the average low temperature in winter is around 35°F. It has an arid climate with very little precipitation due to the rain shadow effect of nearby mountains, making it one of the driest cities in North America. This also contributes to a lot of sunny days year-round, with more than 300 days of sunshine annually. St. George has very low humidity all year long, which can make it seem colder in winter and hotter in summer than it really is.

St. George, Utah gets 10 inches of rain, on average, per year. The US average is 38 inches of rain per year.

St. George averages 2 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 255 sunny days per year in St. George. The US average is 205 sunny days.

St. George gets some kind of precipitation, on average, 43 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

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Weather Highlights

Summer High: the July high is around 101 degrees
Winter Low: the January low is 29
Rain: averages 10 inches of rain a year
Snow: averages 2 inches of snow a year

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BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for St. George is 7.5 (10=best), which means it is one of the most pleasant places in Utah.

April, October and May are the most pleasant months in St. George, while July and August are the least comfortable months.

July is the hottest month for St. George with an average high temperature of 101.2°, which ranks it as one of the hottest places in Utah. In St. George, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for St. George are October, April and May.

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In St. George, there are 118.3 days annually when the high temperature is over 90°, which is one of the hottest places in Utah.

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December has the coldest nighttime temperatures for St. George with an average of 28.1°. This is one of the warmest places in Utah.

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In St. George, there are 76.5 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Utah.

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In St. George, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Utah.

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Humidity is very low in St. George, so low that the dry air may be uncomfortable for some people. There are few days during the year when the humidity is even noticable. A very dry climate can lead to cracked, itchy skin and dry eyes.

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February is the wettest month in St. George with 1.5 inches of rain, and the driest month is June with 0.2 inches. The wettest season is Spring with 39% of yearly precipitation and 16% occurs in Autumn, which is the driest season. The annual rainfall of 10.0 inches in St. George means that it is drier than most places in Utah.

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February is the rainiest month in St. George with 5.9 days of rain, and June is the driest month with only 1.4 rainy days. There are 42.6 rainy days annually in St. George, which is one of the least rainy places in Utah. The rainiest season is Spring when it rains 35% of the time and the driest is Autumn with only a 18% chance of a rainy day.

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An annual snowfall of 1.5 inches in St. George means that it is one of the least snowy places in Utah. January is the snowiest month in St. George with 0.5 inches of snow, and 1 month of the year have significant snowfall.

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