April in Klyuchevskiy is the snowiest month of the year. In April, the weather in Klyuchevskiy is typically cold. Average daily high temperature in April is about 4 degrees above zero. On average, Klyuchevskiy has 12 partly cloudy, 7 sunny, 6 cloudy, 3 rainy, and 2 snowy days in April. The rains are usually light.