July in Leoben is the warmest month of the year. In July, the weather in Leoben is typically warm. Average daily high temperature in July is about 19 degrees above zero. On average, Leoben has 19 rainy, 10 sunny, and 2 partly cloudy days in July. The rains are usually heavy. July as well as February, March, April, and May is considered the most uncomfortable time to visit Leoben.