July in Lurgan is the warmest month of the year. In July, the weather in Lurgan is typically warm. Average daily high temperature in July is about 16 degrees above zero. On average, Lurgan has 27 rainy, 3 sunny, and 1 cloudy day in July. The rains are usually heavy. July as well as January, February, March, and April is considered the most uncomfortable time to visit Lurgan.