July in Lillehammer is the rainiest, the sunniest, and the warmest month of the year. In July, the weather in Lillehammer is typically warm. Average daily high temperature in July is about 17 degrees above zero. On average, Lillehammer has 22 rainy, 6 sunny, 2 partly cloudy, and 1 cloudy day in July. The rains are usually heavy. July as well as April, May, June, and August is considered the most uncomfortable time to visit Lillehammer.