January in Ross-on-Wye is the rainiest, the windiest, and the coldest month of the year. In January, the weather in Ross-on-Wye is typically cold. Average daily high temperature in January is about 6 degrees above zero. On average, Ross-on-Wye has 19 rainy, 5 sunny, 4 partly cloudy, and 3 cloudy days in January. The rains are usually moderate. January as well as February, November, and December is considered the most uncomfortable time to visit Ross-on-Wye.