In April, the weather in Zheleznogorsk is typically warm. Average daily high temperature in April is about 11 degrees above zero. On average, Zheleznogorsk has 10 rainy, 7 sunny, 7 partly cloudy, and 6 cloudy days in April. The rains are usually light. April as well as March, October, and November is considered the most uncomfortable time to visit Zheleznogorsk.