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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.
Most / Least Educated Cities in UT. The average temperature of Washington is 54.09Â°F, which is higher than the Utah average temperature of 49.55Â°F and is about the same as the national average temperature of 54.45Â°F. Topics: Heating Cost Index Cooling Cost Index Historical Temperature Historical Precipitation Historical Snow Historical Humidity Historical Wind Speed