May in Mostovskoi is the rainiest month of the year. In May, the weather in Mostovskoi is typically warm. Average daily high temperature in May is about 19 degrees above zero. On average, Mostovskoi has 21 rainy and 10 sunny days in May. The rains are usually heavy. May as well as January, February, March, and December is considered the most uncomfortable time to visit Mostovskoi.