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The average temperature of Saint George is 56.23Â°F, which is much higher than the Utah average temperature of 49.55Â°F and is higher than the national average temperature of 54.45Â°F.
The highest average temperature in St. George is July at 90.5 degrees. The coldest average temperature in St. George is December at 39.2 degrees. The most monthly precipitation in St. George occurs in March with 1.1 inches. The St. George weather information is based on the average of the previous 3-7 years of data. Loading...