July in Zheleznogorsk-Ilimsky is the warmest month of the year. In July, the weather in Zheleznogorsk-Ilimsky is typically warm. Average daily high temperature in July is about 23 degrees above zero. On average, Zheleznogorsk-Ilimsky has 12 rainy, 9 partly cloudy, 7 sunny, and 3 cloudy days in July. The rains are usually moderate.