May in Nikolskoye-Kazakovo is the rainiest month of the year. In May, the weather in Nikolskoye-Kazakovo is typically warm. Average daily high temperature in May is about 21 degrees above zero. On average, Nikolskoye-Kazakovo has 13 partly cloudy, 9 rainy, and 9 sunny days in May. The rains are usually moderate.