July weather forecast in Kelso

July in Kelso is the sunniest month of the year. In July, the weather in Kelso is typically warm. Average daily high temperature in July is about 23 degrees above zero. On average, Kelso has 19 sunny, 9 partly cloudy, and 3 rainy days in July. The rains are usually light. July as well as August is considered the most comfortable time to visit Kelso.