January weather forecast in Hailey

January in Hailey is the cloudiest month of the year. In January, the weather in Hailey is typically freezing. Average daily high temperature in January is about 3 degrees below zero. On average, Hailey has 10 snowy, 8 sunny, 8 partly cloudy, 4 cloudy, and 1 rainy day in January. The snowfalls are usually moderate.