July in Girdwood is the rainiest and the warmest month of the year. In July, the weather in Girdwood is typically warm. Average daily high temperature in July is about 10 degrees above zero. On average, Girdwood has 28 rainy, 2 sunny, and 1 partly cloudy day in July. The rains are usually heavy. July as well as May, June, August, and September is considered the most uncomfortable time to visit Girdwood.