July in Lucknow is the rainiest and the cloudiest month of the year. In July, the weather in Lucknow is typically hot. Average daily high temperature in July is about 32 degrees above zero. On average, Lucknow has 29 rainy, 1 sunny, and 1 cloudy day in July. The rains are usually heavy. July as well as August is considered the most uncomfortable time to visit Lucknow.