March in Hailey is the rainiest month of the year. In March, the weather in Hailey is typically cold. Average daily high temperature in March is about 3 degrees above zero. On average, Hailey has 12 partly cloudy, 10 rainy, 6 sunny, and 3 cloudy days in March. The rains are usually moderate. March as well as April and November is considered the most uncomfortable time to visit Hailey.