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St. George Weather. The weather in St. George, Utah could be classified by two simple words: sunny and warm. Super hot summers and mild winters make St. George a desirable location for travelers. Because of the comfortable climate, St. George is a year-round playground for outdoor adventurists.
Cedar City, Utah, gets 12 inches of rain per year. The US average is 39. Snowfall is 110 inches. The average US city gets 26 inches of snow per year. The number of days with any measurable precipitation is 33. On average, there are 256 sunny days per year in Cedar City, Utah. The July high is around 89 degrees. The January low is 18. Sperling's comfort index for Cedar City is a 71 out of 100, where a higher score indicates a more comfortable year-around climate. The US average for the comfort index is 54.