July in Olympic Valley is the sunniest and the warmest month of the year. In July, the weather in Olympic Valley is typically warm. Average daily high temperature in July is about 26 degrees above zero. On average, Olympic Valley has 25 sunny, 3 rainy, and 3 partly cloudy days in July. The rains are usually light. July as well as June, August, and September is considered the most comfortable time to visit Olympic Valley.