January weather forecast in St. George

January in St. George is the cloudiest month of the year. In January, the weather in St. George is typically warm. Average daily high temperature in January is about 19 degrees above zero. On average, St. George has 18 rainy, 6 cloudy, 5 sunny, and 2 partly cloudy days in January. The rains are usually heavy. January as well as February, August, and September is considered the most uncomfortable time to visit St. George.