October in Udomlya is the rainiest month of the year. In October, the weather in Udomlya is typically cold. Average daily high temperature in October is about 6 degrees above zero. On average, Udomlya has 18 rainy, 12 cloudy, and 1 sunny day in October. The rains are usually moderate. October as well as April, September, and November is considered the most uncomfortable time to visit Udomlya.