January in Manchester is the rainiest, the windiest, and the coldest month of the year. In January, the weather in Manchester is typically cold. Average daily high temperature in January is about 5 degrees above zero. On average, Manchester has 26 rainy, 4 sunny, and 1 cloudy day in January. The rains are usually moderate. January as well as February, March, April, and May is considered the most uncomfortable time to visit Manchester.