January in Hereford is the coldest month of the year. In January, the weather in Hereford is typically cold. Average daily high temperature in January is about 6 degrees above zero. On average, Hereford has 12 rainy, 9 partly cloudy, 6 cloudy, and 4 sunny days in January. The rains are usually moderate. January as well as February, March, April, and May is considered the most uncomfortable time to visit Hereford.